18780720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1597}}^1$

素因数の和:1627

約数の個数: 120

約数和(自身を含む): 67767984

約数和(自身を除く): 48987264

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1597, 1680, 1960, 2352, 2940, 3194, 3920, 4791, 5880, 6388, 7985, 9582, 11179, 11760, 12776, 15970, 19164, 22358, 23955, 25552, 31940, 33537, 38328, 44716, 47910, 55895, 63880, 67074, 76656, 78253, 89432, 95820, 111790, 127760, 134148, 156506, 167685, 178864, 191640, 223580, 234759, 268296, 313012, 335370, 383280, 391265, 447160, 469518, 536592, 626024, 670740, 782530, 894320, 939036, 1173795, 1252048, 1341480, 1565060, 1878072, 2347590, 2682960, 3130120, 3756144, 4695180, 6260240, 9390360, 18780720]

約数ペア:

[(1, 18780720), (2, 9390360), (3, 6260240), (4, 4695180), (5, 3756144), (6, 3130120), (7, 2682960), (8, 2347590), (10, 1878072), (12, 1565060), (14, 1341480), (15, 1252048), (16, 1173795), (20, 939036), (21, 894320), (24, 782530), (28, 670740), (30, 626024), (35, 536592), (40, 469518), (42, 447160), (48, 391265), (49, 383280), (56, 335370), (60, 313012), (70, 268296), (80, 234759), (84, 223580), (98, 191640), (105, 178864), (112, 167685), (120, 156506), (140, 134148), (147, 127760), (168, 111790), (196, 95820), (210, 89432), (240, 78253), (245, 76656), (280, 67074), (294, 63880), (336, 55895), (392, 47910), (420, 44716), (490, 38328), (560, 33537), (588, 31940), (735, 25552), (784, 23955), (840, 22358), (980, 19164), (1176, 15970), (1470, 12776), (1597, 11760), (1680, 11179), (1960, 9582), (2352, 7985), (2940, 6388), (3194, 5880), (3920, 4791)]