21691125

素因数分解:

$3^3\times 5^3\times {\mathrm{6427}}^1$

素因数の和:6451

約数の個数: 32

約数和(自身を含む): 40110720

約数和(自身を除く): 18419595

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 225, 375, 675, 1125, 3375, 6427, 19281, 32135, 57843, 96405, 160675, 173529, 289215, 482025, 803375, 867645, 1446075, 2410125, 4338225, 7230375, 21691125]

約数ペア:

[(1, 21691125), (3, 7230375), (5, 4338225), (9, 2410125), (15, 1446075), (25, 867645), (27, 803375), (45, 482025), (75, 289215), (125, 173529), (135, 160675), (225, 96405), (375, 57843), (675, 32135), (1125, 19281), (3375, 6427)]