21463640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48781}}^1$

素因数の和:48803

約数の個数: 32

約数和(自身を含む): 52684560

約数和(自身を除く): 31220920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48781, 97562, 195124, 243905, 390248, 487810, 536591, 975620, 1073182, 1951240, 2146364, 2682955, 4292728, 5365910, 10731820, 21463640]

約数ペア:

[(1, 21463640), (2, 10731820), (4, 5365910), (5, 4292728), (8, 2682955), (10, 2146364), (11, 1951240), (20, 1073182), (22, 975620), (40, 536591), (44, 487810), (55, 390248), (88, 243905), (110, 195124), (220, 97562), (440, 48781)]