200801780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1\times {\mathrm{449}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 430920000

約数和(自身を除く): 230118220

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 379, 449, 590, 758, 898, 1180, 1516, 1796, 1895, 2245, 3790, 4490, 7580, 8980, 22361, 26491, 44722, 52982, 89444, 105964, 111805, 132455, 170171, 223610, 264910, 340342, 447220, 529820, 680684, 850855, 1701710, 3403420, 10040089, 20080178, 40160356, 50200445, 100400890, 200801780]

約数ペア:

[(1, 200801780), (2, 100400890), (4, 50200445), (5, 40160356), (10, 20080178), (20, 10040089), (59, 3403420), (118, 1701710), (236, 850855), (295, 680684), (379, 529820), (449, 447220), (590, 340342), (758, 264910), (898, 223610), (1180, 170171), (1516, 132455), (1796, 111805), (1895, 105964), (2245, 89444), (3790, 52982), (4490, 44722), (7580, 26491), (8980, 22361)]