21556478480

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2667881}}^1$

素因数の和:2667995

約数の個数: 40

約数和(自身を含む): 50615057304

約数和(自身を除く): 29058578824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 2667881, 5335762, 10671524, 13339405, 21343048, 26678810, 42686096, 53357620, 106715240, 213430480, 269455981, 538911962, 1077823924, 1347279905, 2155647848, 2694559810, 4311295696, 5389119620, 10778239240, 21556478480]

約数ペア:

[(1, 21556478480), (2, 10778239240), (4, 5389119620), (5, 4311295696), (8, 2694559810), (10, 2155647848), (16, 1347279905), (20, 1077823924), (40, 538911962), (80, 269455981), (101, 213430480), (202, 106715240), (404, 53357620), (505, 42686096), (808, 26678810), (1010, 21343048), (1616, 13339405), (2020, 10671524), (4040, 5335762), (8080, 2667881)]