21505290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{719}}^1\times {\mathrm{997}}^1$

素因数の和:1726

約数の個数: 32

約数和(自身を含む): 51736320

約数和(自身を除く): 30231030

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 719, 997, 1438, 1994, 2157, 2991, 3595, 4314, 4985, 5982, 7190, 9970, 10785, 14955, 21570, 29910, 716843, 1433686, 2150529, 3584215, 4301058, 7168430, 10752645, 21505290]

約数ペア:

[(1, 21505290), (2, 10752645), (3, 7168430), (5, 4301058), (6, 3584215), (10, 2150529), (15, 1433686), (30, 716843), (719, 29910), (997, 21570), (1438, 14955), (1994, 10785), (2157, 9970), (2991, 7190), (3595, 5982), (4314, 4985)]