21000404873

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1\times {\mathrm{273653}}^1$

素因数の和:274256

約数の個数: 16

約数和(自身を含む): 25307521920

約数和(自身を除く): 4307117047

約数列:

[1, 7, 19, 133, 577, 4039, 10963, 76741, 273653, 1915571, 5199407, 36395849, 157897781, 1105284467, 3000057839, 21000404873]

約数ペア:

[(1, 21000404873), (7, 3000057839), (19, 1105284467), (133, 157897781), (577, 36395849), (4039, 5199407), (10963, 1915571), (76741, 273653)]