21931160

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1571}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 49518000

約数和(自身を除く): 27586840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1571, 1745, 2792, 3142, 3490, 6284, 6980, 7855, 12568, 13960, 15710, 31420, 62840, 548279, 1096558, 2193116, 2741395, 4386232, 5482790, 10965580, 21931160]

約数ペア:

[(1, 21931160), (2, 10965580), (4, 5482790), (5, 4386232), (8, 2741395), (10, 2193116), (20, 1096558), (40, 548279), (349, 62840), (698, 31420), (1396, 15710), (1571, 13960), (1745, 12568), (2792, 7855), (3142, 6980), (3490, 6284)]