780996920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{161363}}^1$

素因数の和:161396

約数の個数: 48

約数和(自身を含む): 1931527080

約数和(自身を除く): 1150530160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 161363, 322726, 645452, 806815, 1290904, 1613630, 1774993, 3227260, 3549986, 6454520, 7099972, 8874965, 14199944, 17749930, 19524923, 35499860, 39049846, 70999720, 78099692, 97624615, 156199384, 195249230, 390498460, 780996920]

約数ペア:

[(1, 780996920), (2, 390498460), (4, 195249230), (5, 156199384), (8, 97624615), (10, 78099692), (11, 70999720), (20, 39049846), (22, 35499860), (40, 19524923), (44, 17749930), (55, 14199944), (88, 8874965), (110, 7099972), (121, 6454520), (220, 3549986), (242, 3227260), (440, 1774993), (484, 1613630), (605, 1290904), (968, 806815), (1210, 645452), (2420, 322726), (4840, 161363)]