821105420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1\times {\mathrm{4523}}^1$

素因数の和:4874

約数の個数: 48

約数和(自身を含む): 1789875360

約数和(自身を除く): 968769940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 313, 580, 626, 1252, 1565, 3130, 4523, 6260, 9046, 9077, 18092, 18154, 22615, 36308, 45230, 45385, 90460, 90770, 131167, 181540, 262334, 524668, 655835, 1311670, 1415699, 2623340, 2831398, 5662796, 7078495, 14156990, 28313980, 41055271, 82110542, 164221084, 205276355, 410552710, 821105420]

約数ペア:

[(1, 821105420), (2, 410552710), (4, 205276355), (5, 164221084), (10, 82110542), (20, 41055271), (29, 28313980), (58, 14156990), (116, 7078495), (145, 5662796), (290, 2831398), (313, 2623340), (580, 1415699), (626, 1311670), (1252, 655835), (1565, 524668), (3130, 262334), (4523, 181540), (6260, 131167), (9046, 90770), (9077, 90460), (18092, 45385), (18154, 45230), (22615, 36308)]