28025361

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1801}}^1$

素因数の和:1846

約数の個数: 48

約数和(自身を含む): 52474240

約数和(自身を除く): 24448879

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 117, 133, 171, 247, 273, 399, 741, 819, 1197, 1729, 1801, 2223, 5187, 5403, 12607, 15561, 16209, 23413, 34219, 37821, 70239, 102657, 113463, 163891, 210717, 239533, 307971, 444847, 491673, 718599, 1334541, 1475019, 2155797, 3113929, 4003623, 9341787, 28025361]

約数ペア:

[(1, 28025361), (3, 9341787), (7, 4003623), (9, 3113929), (13, 2155797), (19, 1475019), (21, 1334541), (39, 718599), (57, 491673), (63, 444847), (91, 307971), (117, 239533), (133, 210717), (171, 163891), (247, 113463), (273, 102657), (399, 70239), (741, 37821), (819, 34219), (1197, 23413), (1729, 16209), (1801, 15561), (2223, 12607), (5187, 5403)]