21567920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24509}}^1$

素因数の和:24533

約数の個数: 40

約数和(自身を含む): 54706320

約数和(自身を除く): 33138400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24509, 49018, 98036, 122545, 196072, 245090, 269599, 392144, 490180, 539198, 980360, 1078396, 1347995, 1960720, 2156792, 2695990, 4313584, 5391980, 10783960, 21567920]

約数ペア:

[(1, 21567920), (2, 10783960), (4, 5391980), (5, 4313584), (8, 2695990), (10, 2156792), (11, 1960720), (16, 1347995), (20, 1078396), (22, 980360), (40, 539198), (44, 490180), (55, 392144), (80, 269599), (88, 245090), (110, 196072), (176, 122545), (220, 98036), (440, 49018), (880, 24509)]