18713520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 240

約数和(自身を含む): 74280960

約数和(自身を除く): 55567440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 47, 48, 56, 60, 63, 70, 72, 79, 80, 84, 90, 94, 105, 112, 120, 126, 140, 141, 144, 158, 168, 180, 188, 210, 235, 237, 240, 252, 280, 282, 315, 316, 329, 336, 360, 376, 395, 420, 423, 470, 474, 504, 553, 560, 564, 630, 632, 658, 705, 711, 720, 752, 790, 840, 846, 940, 948, 987, 1008, 1106, 1128, 1185, 1260, 1264, 1316, 1410, 1422, 1580, 1645, 1659, 1680, 1692, 1880, 1896, 1974, 2115, 2212, 2256, 2370, 2520, 2632, 2765, 2820, 2844, 2961, 3160, 3290, 3318, 3384, 3555, 3713, 3760, 3792, 3948, 4230, 4424, 4740, 4935, 4977, 5040, 5264, 5530, 5640, 5688, 5922, 6320, 6580, 6636, 6768, 7110, 7426, 7896, 8295, 8460, 8848, 9480, 9870, 9954, 11060, 11139, 11280, 11376, 11844, 13160, 13272, 14220, 14805, 14852, 15792, 16590, 16920, 18565, 18960, 19740, 19908, 22120, 22278, 23688, 24885, 25991, 26320, 26544, 28440, 29610, 29704, 33180, 33417, 33840, 37130, 39480, 39816, 44240, 44556, 47376, 49770, 51982, 55695, 56880, 59220, 59408, 66360, 66834, 74260, 77973, 78960, 79632, 89112, 99540, 103964, 111390, 118440, 129955, 132720, 133668, 148520, 155946, 167085, 178224, 199080, 207928, 222780, 233919, 236880, 259910, 267336, 297040, 311892, 334170, 389865, 398160, 415856, 445560, 467838, 519820, 534672, 623784, 668340, 779730, 891120, 935676, 1039640, 1169595, 1247568, 1336680, 1559460, 1871352, 2079280, 2339190, 2673360, 3118920, 3742704, 4678380, 6237840, 9356760, 18713520]

約数ペア:

[(1, 18713520), (2, 9356760), (3, 6237840), (4, 4678380), (5, 3742704), (6, 3118920), (7, 2673360), (8, 2339190), (9, 2079280), (10, 1871352), (12, 1559460), (14, 1336680), (15, 1247568), (16, 1169595), (18, 1039640), (20, 935676), (21, 891120), (24, 779730), (28, 668340), (30, 623784), (35, 534672), (36, 519820), (40, 467838), (42, 445560), (45, 415856), (47, 398160), (48, 389865), (56, 334170), (60, 311892), (63, 297040), (70, 267336), (72, 259910), (79, 236880), (80, 233919), (84, 222780), (90, 207928), (94, 199080), (105, 178224), (112, 167085), (120, 155946), (126, 148520), (140, 133668), (141, 132720), (144, 129955), (158, 118440), (168, 111390), (180, 103964), (188, 99540), (210, 89112), (235, 79632), (237, 78960), (240, 77973), (252, 74260), (280, 66834), (282, 66360), (315, 59408), (316, 59220), (329, 56880), (336, 55695), (360, 51982), (376, 49770), (395, 47376), (420, 44556), (423, 44240), (470, 39816), (474, 39480), (504, 37130), (553, 33840), (560, 33417), (564, 33180), (630, 29704), (632, 29610), (658, 28440), (705, 26544), (711, 26320), (720, 25991), (752, 24885), (790, 23688), (840, 22278), (846, 22120), (940, 19908), (948, 19740), (987, 18960), (1008, 18565), (1106, 16920), (1128, 16590), (1185, 15792), (1260, 14852), (1264, 14805), (1316, 14220), (1410, 13272), (1422, 13160), (1580, 11844), (1645, 11376), (1659, 11280), (1680, 11139), (1692, 11060), (1880, 9954), (1896, 9870), (1974, 9480), (2115, 8848), (2212, 8460), (2256, 8295), (2370, 7896), (2520, 7426), (2632, 7110), (2765, 6768), (2820, 6636), (2844, 6580), (2961, 6320), (3160, 5922), (3290, 5688), (3318, 5640), (3384, 5530), (3555, 5264), (3713, 5040), (3760, 4977), (3792, 4935), (3948, 4740), (4230, 4424)]