21261840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88591}}^1$

素因数の和:88607

約数の個数: 40

約数和(自身を含む): 65912448

約数和(自身を除く): 44650608

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88591, 177182, 265773, 354364, 442955, 531546, 708728, 885910, 1063092, 1328865, 1417456, 1771820, 2126184, 2657730, 3543640, 4252368, 5315460, 7087280, 10630920, 21261840]

約数ペア:

[(1, 21261840), (2, 10630920), (3, 7087280), (4, 5315460), (5, 4252368), (6, 3543640), (8, 2657730), (10, 2126184), (12, 1771820), (15, 1417456), (16, 1328865), (20, 1063092), (24, 885910), (30, 708728), (40, 531546), (48, 442955), (60, 354364), (80, 265773), (120, 177182), (240, 88591)]