21688875

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1483}}^1$

素因数の和:1517

約数の個数: 48

約数和(自身を含む): 42133728

約数和(自身を除く): 20444853

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 585, 975, 1125, 1483, 1625, 2925, 4449, 4875, 7415, 13347, 14625, 19279, 22245, 37075, 57837, 66735, 96395, 111225, 173511, 185375, 289185, 333675, 481975, 556125, 867555, 1445925, 1668375, 2409875, 4337775, 7229625, 21688875]

約数ペア:

[(1, 21688875), (3, 7229625), (5, 4337775), (9, 2409875), (13, 1668375), (15, 1445925), (25, 867555), (39, 556125), (45, 481975), (65, 333675), (75, 289185), (117, 185375), (125, 173511), (195, 111225), (225, 96395), (325, 66735), (375, 57837), (585, 37075), (975, 22245), (1125, 19279), (1483, 14625), (1625, 13347), (2925, 7415), (4449, 4875)]