21031244

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 43168608

約数和(自身を除く): 22137364

約数列:

[1, 2, 4, 13, 17, 26, 34, 37, 52, 68, 74, 148, 221, 442, 481, 629, 643, 884, 962, 1258, 1286, 1924, 2516, 2572, 8177, 8359, 10931, 16354, 16718, 21862, 23791, 32708, 33436, 43724, 47582, 95164, 142103, 284206, 309283, 404447, 568412, 618566, 808894, 1237132, 1617788, 5257811, 10515622, 21031244]

約数ペア:

[(1, 21031244), (2, 10515622), (4, 5257811), (13, 1617788), (17, 1237132), (26, 808894), (34, 618566), (37, 568412), (52, 404447), (68, 309283), (74, 284206), (148, 142103), (221, 95164), (442, 47582), (481, 43724), (629, 33436), (643, 32708), (884, 23791), (962, 21862), (1258, 16718), (1286, 16354), (1924, 10931), (2516, 8359), (2572, 8177)]