20011360

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{691}}^1$

素因数の和:887

約数の個数: 48

約数和(自身を含む): 47606832

約数和(自身を除く): 27595472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 691, 724, 905, 1382, 1448, 1810, 2764, 2896, 3455, 3620, 5528, 5792, 6910, 7240, 11056, 13820, 14480, 22112, 27640, 28960, 55280, 110560, 125071, 250142, 500284, 625355, 1000568, 1250710, 2001136, 2501420, 4002272, 5002840, 10005680, 20011360]

約数ペア:

[(1, 20011360), (2, 10005680), (4, 5002840), (5, 4002272), (8, 2501420), (10, 2001136), (16, 1250710), (20, 1000568), (32, 625355), (40, 500284), (80, 250142), (160, 125071), (181, 110560), (362, 55280), (691, 28960), (724, 27640), (905, 22112), (1382, 14480), (1448, 13820), (1810, 11056), (2764, 7240), (2896, 6910), (3455, 5792), (3620, 5528)]