28490840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1049}}^1$

素因数の和:1164

約数の個数: 64

約数和(自身を含む): 74088000

約数和(自身を除く): 45597160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 679, 776, 970, 1049, 1358, 1940, 2098, 2716, 3395, 3880, 4196, 5245, 5432, 6790, 7343, 8392, 10490, 13580, 14686, 20980, 27160, 29372, 36715, 41960, 58744, 73430, 101753, 146860, 203506, 293720, 407012, 508765, 712271, 814024, 1017530, 1424542, 2035060, 2849084, 3561355, 4070120, 5698168, 7122710, 14245420, 28490840]

約数ペア:

[(1, 28490840), (2, 14245420), (4, 7122710), (5, 5698168), (7, 4070120), (8, 3561355), (10, 2849084), (14, 2035060), (20, 1424542), (28, 1017530), (35, 814024), (40, 712271), (56, 508765), (70, 407012), (97, 293720), (140, 203506), (194, 146860), (280, 101753), (388, 73430), (485, 58744), (679, 41960), (776, 36715), (970, 29372), (1049, 27160), (1358, 20980), (1940, 14686), (2098, 13580), (2716, 10490), (3395, 8392), (3880, 7343), (4196, 6790), (5245, 5432)]