21297670

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{569}}^1$

素因数の和:792

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 19331930

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 197, 394, 569, 985, 1138, 1970, 2845, 3743, 5690, 7486, 10811, 18715, 21622, 37430, 54055, 108110, 112093, 224186, 560465, 1120930, 2129767, 4259534, 10648835, 21297670]

約数ペア:

[(1, 21297670), (2, 10648835), (5, 4259534), (10, 2129767), (19, 1120930), (38, 560465), (95, 224186), (190, 112093), (197, 108110), (394, 54055), (569, 37430), (985, 21622), (1138, 18715), (1970, 10811), (2845, 7486), (3743, 5690)]