21563470

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:460

約数の個数: 32

約数和(自身を含む): 39853440

約数和(自身を除く): 18289970

約数列:

[1, 2, 5, 10, 73, 109, 146, 218, 271, 365, 542, 545, 730, 1090, 1355, 2710, 7957, 15914, 19783, 29539, 39566, 39785, 59078, 79570, 98915, 147695, 197830, 295390, 2156347, 4312694, 10781735, 21563470]

約数ペア:

[(1, 21563470), (2, 10781735), (5, 4312694), (10, 2156347), (73, 295390), (109, 197830), (146, 147695), (218, 98915), (271, 79570), (365, 59078), (542, 39785), (545, 39566), (730, 29539), (1090, 19783), (1355, 15914), (2710, 7957)]