21642530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1399}}^1$

素因数の和:1443

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29160670

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 65, 70, 85, 91, 119, 130, 170, 182, 221, 238, 442, 455, 595, 910, 1105, 1190, 1399, 1547, 2210, 2798, 3094, 6995, 7735, 9793, 13990, 15470, 18187, 19586, 23783, 36374, 47566, 48965, 90935, 97930, 118915, 127309, 166481, 181870, 237830, 254618, 309179, 332962, 618358, 636545, 832405, 1273090, 1545895, 1664810, 2164253, 3091790, 4328506, 10821265, 21642530]

約数ペア:

[(1, 21642530), (2, 10821265), (5, 4328506), (7, 3091790), (10, 2164253), (13, 1664810), (14, 1545895), (17, 1273090), (26, 832405), (34, 636545), (35, 618358), (65, 332962), (70, 309179), (85, 254618), (91, 237830), (119, 181870), (130, 166481), (170, 127309), (182, 118915), (221, 97930), (238, 90935), (442, 48965), (455, 47566), (595, 36374), (910, 23783), (1105, 19586), (1190, 18187), (1399, 15470), (1547, 13990), (2210, 9793), (2798, 7735), (3094, 6995)]