19440720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:130

約数の個数: 240

約数和(自身を含む): 73661952

約数和(自身を除く): 54221232

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 31, 36, 39, 40, 45, 48, 52, 60, 62, 65, 67, 72, 78, 80, 90, 93, 104, 117, 120, 124, 130, 134, 144, 155, 156, 180, 186, 195, 201, 208, 234, 240, 248, 260, 268, 279, 310, 312, 335, 360, 372, 390, 402, 403, 465, 468, 496, 520, 536, 558, 585, 603, 620, 624, 670, 720, 744, 780, 804, 806, 871, 930, 936, 1005, 1040, 1072, 1116, 1170, 1206, 1209, 1240, 1340, 1395, 1488, 1560, 1608, 1612, 1742, 1860, 1872, 2010, 2015, 2077, 2232, 2340, 2412, 2418, 2480, 2613, 2680, 2790, 3015, 3120, 3216, 3224, 3484, 3627, 3720, 4020, 4030, 4154, 4355, 4464, 4680, 4824, 4836, 5226, 5360, 5580, 6030, 6045, 6231, 6448, 6968, 7254, 7440, 7839, 8040, 8060, 8308, 8710, 9360, 9648, 9672, 10385, 10452, 11160, 12060, 12090, 12462, 13065, 13936, 14508, 15678, 16080, 16120, 16616, 17420, 18135, 18693, 19344, 20770, 20904, 22320, 24120, 24180, 24924, 26130, 27001, 29016, 31155, 31356, 32240, 33232, 34840, 36270, 37386, 39195, 41540, 41808, 48240, 48360, 49848, 52260, 54002, 58032, 62310, 62712, 69680, 72540, 74772, 78390, 81003, 83080, 93465, 96720, 99696, 104520, 108004, 124620, 125424, 135005, 145080, 149544, 156780, 162006, 166160, 186930, 209040, 216008, 243009, 249240, 270010, 290160, 299088, 313560, 324012, 373860, 405015, 432016, 486018, 498480, 540020, 627120, 648024, 747720, 810030, 972036, 1080040, 1215045, 1296048, 1495440, 1620060, 1944072, 2160080, 2430090, 3240120, 3888144, 4860180, 6480240, 9720360, 19440720]

約数ペア:

[(1, 19440720), (2, 9720360), (3, 6480240), (4, 4860180), (5, 3888144), (6, 3240120), (8, 2430090), (9, 2160080), (10, 1944072), (12, 1620060), (13, 1495440), (15, 1296048), (16, 1215045), (18, 1080040), (20, 972036), (24, 810030), (26, 747720), (30, 648024), (31, 627120), (36, 540020), (39, 498480), (40, 486018), (45, 432016), (48, 405015), (52, 373860), (60, 324012), (62, 313560), (65, 299088), (67, 290160), (72, 270010), (78, 249240), (80, 243009), (90, 216008), (93, 209040), (104, 186930), (117, 166160), (120, 162006), (124, 156780), (130, 149544), (134, 145080), (144, 135005), (155, 125424), (156, 124620), (180, 108004), (186, 104520), (195, 99696), (201, 96720), (208, 93465), (234, 83080), (240, 81003), (248, 78390), (260, 74772), (268, 72540), (279, 69680), (310, 62712), (312, 62310), (335, 58032), (360, 54002), (372, 52260), (390, 49848), (402, 48360), (403, 48240), (465, 41808), (468, 41540), (496, 39195), (520, 37386), (536, 36270), (558, 34840), (585, 33232), (603, 32240), (620, 31356), (624, 31155), (670, 29016), (720, 27001), (744, 26130), (780, 24924), (804, 24180), (806, 24120), (871, 22320), (930, 20904), (936, 20770), (1005, 19344), (1040, 18693), (1072, 18135), (1116, 17420), (1170, 16616), (1206, 16120), (1209, 16080), (1240, 15678), (1340, 14508), (1395, 13936), (1488, 13065), (1560, 12462), (1608, 12090), (1612, 12060), (1742, 11160), (1860, 10452), (1872, 10385), (2010, 9672), (2015, 9648), (2077, 9360), (2232, 8710), (2340, 8308), (2412, 8060), (2418, 8040), (2480, 7839), (2613, 7440), (2680, 7254), (2790, 6968), (3015, 6448), (3120, 6231), (3216, 6045), (3224, 6030), (3484, 5580), (3627, 5360), (3720, 5226), (4020, 4836), (4030, 4824), (4154, 4680), (4355, 4464)]