20245290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 128

約数和(自身を含む): 56996352

約数和(自身を除く): 36751062

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 37, 39, 46, 61, 65, 69, 74, 78, 111, 115, 122, 130, 138, 183, 185, 195, 222, 230, 299, 305, 345, 366, 370, 390, 481, 555, 598, 610, 690, 793, 851, 897, 915, 962, 1110, 1403, 1443, 1495, 1586, 1702, 1794, 1830, 2257, 2379, 2405, 2553, 2806, 2886, 2990, 3965, 4209, 4255, 4485, 4514, 4758, 4810, 5106, 6771, 7015, 7215, 7930, 8418, 8510, 8970, 11063, 11285, 11895, 12765, 13542, 14030, 14430, 18239, 21045, 22126, 22570, 23790, 25530, 29341, 33189, 33855, 36478, 42090, 51911, 54717, 55315, 58682, 66378, 67710, 88023, 91195, 103822, 109434, 110630, 146705, 155733, 165945, 176046, 182390, 259555, 273585, 293410, 311466, 331890, 440115, 519110, 547170, 674843, 778665, 880230, 1349686, 1557330, 2024529, 3374215, 4049058, 6748430, 10122645, 20245290]

約数ペア:

[(1, 20245290), (2, 10122645), (3, 6748430), (5, 4049058), (6, 3374215), (10, 2024529), (13, 1557330), (15, 1349686), (23, 880230), (26, 778665), (30, 674843), (37, 547170), (39, 519110), (46, 440115), (61, 331890), (65, 311466), (69, 293410), (74, 273585), (78, 259555), (111, 182390), (115, 176046), (122, 165945), (130, 155733), (138, 146705), (183, 110630), (185, 109434), (195, 103822), (222, 91195), (230, 88023), (299, 67710), (305, 66378), (345, 58682), (366, 55315), (370, 54717), (390, 51911), (481, 42090), (555, 36478), (598, 33855), (610, 33189), (690, 29341), (793, 25530), (851, 23790), (897, 22570), (915, 22126), (962, 21045), (1110, 18239), (1403, 14430), (1443, 14030), (1495, 13542), (1586, 12765), (1702, 11895), (1794, 11285), (1830, 11063), (2257, 8970), (2379, 8510), (2405, 8418), (2553, 7930), (2806, 7215), (2886, 7015), (2990, 6771), (3965, 5106), (4209, 4810), (4255, 4758), (4485, 4514)]