19987440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 69209856

約数和(自身を除く): 49222416

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 67, 80, 88, 110, 113, 120, 132, 134, 165, 176, 201, 220, 226, 240, 264, 268, 330, 335, 339, 402, 440, 452, 528, 536, 565, 660, 670, 678, 737, 804, 880, 904, 1005, 1072, 1130, 1243, 1320, 1340, 1356, 1474, 1608, 1695, 1808, 2010, 2211, 2260, 2486, 2640, 2680, 2712, 2948, 3216, 3390, 3685, 3729, 4020, 4422, 4520, 4972, 5360, 5424, 5896, 6215, 6780, 7370, 7458, 7571, 8040, 8844, 9040, 9944, 11055, 11792, 12430, 13560, 14740, 14916, 15142, 16080, 17688, 18645, 19888, 22110, 22713, 24860, 27120, 29480, 29832, 30284, 35376, 37290, 37855, 44220, 45426, 49720, 58960, 59664, 60568, 74580, 75710, 83281, 88440, 90852, 99440, 113565, 121136, 149160, 151420, 166562, 176880, 181704, 227130, 249843, 298320, 302840, 333124, 363408, 416405, 454260, 499686, 605680, 666248, 832810, 908520, 999372, 1249215, 1332496, 1665620, 1817040, 1998744, 2498430, 3331240, 3997488, 4996860, 6662480, 9993720, 19987440]

約数ペア:

[(1, 19987440), (2, 9993720), (3, 6662480), (4, 4996860), (5, 3997488), (6, 3331240), (8, 2498430), (10, 1998744), (11, 1817040), (12, 1665620), (15, 1332496), (16, 1249215), (20, 999372), (22, 908520), (24, 832810), (30, 666248), (33, 605680), (40, 499686), (44, 454260), (48, 416405), (55, 363408), (60, 333124), (66, 302840), (67, 298320), (80, 249843), (88, 227130), (110, 181704), (113, 176880), (120, 166562), (132, 151420), (134, 149160), (165, 121136), (176, 113565), (201, 99440), (220, 90852), (226, 88440), (240, 83281), (264, 75710), (268, 74580), (330, 60568), (335, 59664), (339, 58960), (402, 49720), (440, 45426), (452, 44220), (528, 37855), (536, 37290), (565, 35376), (660, 30284), (670, 29832), (678, 29480), (737, 27120), (804, 24860), (880, 22713), (904, 22110), (1005, 19888), (1072, 18645), (1130, 17688), (1243, 16080), (1320, 15142), (1340, 14916), (1356, 14740), (1474, 13560), (1608, 12430), (1695, 11792), (1808, 11055), (2010, 9944), (2211, 9040), (2260, 8844), (2486, 8040), (2640, 7571), (2680, 7458), (2712, 7370), (2948, 6780), (3216, 6215), (3390, 5896), (3685, 5424), (3729, 5360), (4020, 4972), (4422, 4520)]