1640389960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{17669}}^1$

素因数の和:17902

約数の個数: 64

約数和(自身を含む): 4045723200

約数和(自身を除く): 2405333240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 422, 440, 844, 1055, 1688, 2110, 2321, 4220, 4642, 8440, 9284, 11605, 17669, 18568, 23210, 35338, 46420, 70676, 88345, 92840, 141352, 176690, 194359, 353380, 388718, 706760, 777436, 971795, 1554872, 1943590, 3728159, 3887180, 7456318, 7774360, 14912636, 18640795, 29825272, 37281590, 41009749, 74563180, 82019498, 149126360, 164038996, 205048745, 328077992, 410097490, 820194980, 1640389960]

約数ペア:

[(1, 1640389960), (2, 820194980), (4, 410097490), (5, 328077992), (8, 205048745), (10, 164038996), (11, 149126360), (20, 82019498), (22, 74563180), (40, 41009749), (44, 37281590), (55, 29825272), (88, 18640795), (110, 14912636), (211, 7774360), (220, 7456318), (422, 3887180), (440, 3728159), (844, 1943590), (1055, 1554872), (1688, 971795), (2110, 777436), (2321, 706760), (4220, 388718), (4642, 353380), (8440, 194359), (9284, 176690), (11605, 141352), (17669, 92840), (18568, 88345), (23210, 70676), (35338, 46420)]