638315600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{122753}}^1$

素因数の和:122784

約数の個数: 60

約数和(自身を含む): 1651532316

約数和(自身を除く): 1013216716

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 122753, 245506, 491012, 613765, 982024, 1227530, 1595789, 1964048, 2455060, 3068825, 3191578, 4910120, 6137650, 6383156, 7978945, 9820240, 12275300, 12766312, 15957890, 24550600, 25532624, 31915780, 39894725, 49101200, 63831560, 79789450, 127663120, 159578900, 319157800, 638315600]

約数ペア:

[(1, 638315600), (2, 319157800), (4, 159578900), (5, 127663120), (8, 79789450), (10, 63831560), (13, 49101200), (16, 39894725), (20, 31915780), (25, 25532624), (26, 24550600), (40, 15957890), (50, 12766312), (52, 12275300), (65, 9820240), (80, 7978945), (100, 6383156), (104, 6137650), (130, 4910120), (200, 3191578), (208, 3068825), (260, 2455060), (325, 1964048), (400, 1595789), (520, 1227530), (650, 982024), (1040, 613765), (1300, 491012), (2600, 245506), (5200, 122753)]