21815960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{1031}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 51362640

約数和(自身を除く): 29546680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 529, 920, 1031, 1058, 2062, 2116, 2645, 4124, 4232, 5155, 5290, 8248, 10310, 10580, 20620, 21160, 23713, 41240, 47426, 94852, 118565, 189704, 237130, 474260, 545399, 948520, 1090798, 2181596, 2726995, 4363192, 5453990, 10907980, 21815960]

約数ペア:

[(1, 21815960), (2, 10907980), (4, 5453990), (5, 4363192), (8, 2726995), (10, 2181596), (20, 1090798), (23, 948520), (40, 545399), (46, 474260), (92, 237130), (115, 189704), (184, 118565), (230, 94852), (460, 47426), (529, 41240), (920, 23713), (1031, 21160), (1058, 20620), (2062, 10580), (2116, 10310), (2645, 8248), (4124, 5290), (4232, 5155)]