21371015

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1\times {\mathrm{349}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 26493600

約数和(自身を除く): 5122585

約数列:

[1, 5, 37, 185, 331, 349, 1655, 1745, 12247, 12913, 61235, 64565, 115519, 577595, 4274203, 21371015]

約数ペア:

[(1, 21371015), (5, 4274203), (37, 577595), (185, 115519), (331, 64565), (349, 61235), (1655, 12913), (1745, 12247)]