28050620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 65607696

約数和(自身を除く): 37557076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 193, 215, 260, 338, 386, 430, 559, 676, 772, 845, 860, 965, 1118, 1690, 1930, 2236, 2509, 2795, 3380, 3860, 5018, 5590, 7267, 8299, 10036, 11180, 12545, 14534, 16598, 25090, 29068, 32617, 33196, 36335, 41495, 50180, 65234, 72670, 82990, 107887, 130468, 145340, 163085, 165980, 215774, 326170, 431548, 539435, 652340, 1078870, 1402531, 2157740, 2805062, 5610124, 7012655, 14025310, 28050620]

約数ペア:

[(1, 28050620), (2, 14025310), (4, 7012655), (5, 5610124), (10, 2805062), (13, 2157740), (20, 1402531), (26, 1078870), (43, 652340), (52, 539435), (65, 431548), (86, 326170), (130, 215774), (169, 165980), (172, 163085), (193, 145340), (215, 130468), (260, 107887), (338, 82990), (386, 72670), (430, 65234), (559, 50180), (676, 41495), (772, 36335), (845, 33196), (860, 32617), (965, 29068), (1118, 25090), (1690, 16598), (1930, 14534), (2236, 12545), (2509, 11180), (2795, 10036), (3380, 8299), (3860, 7267), (5018, 5590)]