28436620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 61598880

約数和(自身を除く): 33162260

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 139, 193, 212, 265, 278, 386, 530, 556, 695, 772, 965, 1060, 1390, 1930, 2780, 3860, 7367, 10229, 14734, 20458, 26827, 29468, 36835, 40916, 51145, 53654, 73670, 102290, 107308, 134135, 147340, 204580, 268270, 536540, 1421831, 2843662, 5687324, 7109155, 14218310, 28436620]

約数ペア:

[(1, 28436620), (2, 14218310), (4, 7109155), (5, 5687324), (10, 2843662), (20, 1421831), (53, 536540), (106, 268270), (139, 204580), (193, 147340), (212, 134135), (265, 107308), (278, 102290), (386, 73670), (530, 53654), (556, 51145), (695, 40916), (772, 36835), (965, 29468), (1060, 26827), (1390, 20458), (1930, 14734), (2780, 10229), (3860, 7367)]