21143900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 49684320

約数和(自身を除く): 28540420

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 29, 46, 50, 58, 92, 100, 115, 116, 145, 230, 290, 317, 460, 575, 580, 634, 667, 725, 1150, 1268, 1334, 1450, 1585, 2300, 2668, 2900, 3170, 3335, 6340, 6670, 7291, 7925, 9193, 13340, 14582, 15850, 16675, 18386, 29164, 31700, 33350, 36455, 36772, 45965, 66700, 72910, 91930, 145820, 182275, 183860, 211439, 229825, 364550, 422878, 459650, 729100, 845756, 919300, 1057195, 2114390, 4228780, 5285975, 10571950, 21143900]

約数ペア:

[(1, 21143900), (2, 10571950), (4, 5285975), (5, 4228780), (10, 2114390), (20, 1057195), (23, 919300), (25, 845756), (29, 729100), (46, 459650), (50, 422878), (58, 364550), (92, 229825), (100, 211439), (115, 183860), (116, 182275), (145, 145820), (230, 91930), (290, 72910), (317, 66700), (460, 45965), (575, 36772), (580, 36455), (634, 33350), (667, 31700), (725, 29164), (1150, 18386), (1268, 16675), (1334, 15850), (1450, 14582), (1585, 13340), (2300, 9193), (2668, 7925), (2900, 7291), (3170, 6670), (3335, 6340)]