21000928990

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3301}}^1\times {\mathrm{6299}}^1$

素因数の和:9708

約数の個数: 32

約数和(自身を含む): 38193573600

約数和(自身を除く): 17192644610

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 3301, 6299, 6602, 12598, 16505, 31495, 33010, 62990, 333401, 636199, 666802, 1272398, 1667005, 3180995, 3334010, 6361990, 20792999, 41585998, 103964995, 207929990, 2100092899, 4200185798, 10500464495, 21000928990]

約数ペア:

[(1, 21000928990), (2, 10500464495), (5, 4200185798), (10, 2100092899), (101, 207929990), (202, 103964995), (505, 41585998), (1010, 20792999), (3301, 6361990), (6299, 3334010), (6602, 3180995), (12598, 1667005), (16505, 1272398), (31495, 666802), (33010, 636199), (62990, 333401)]