15785380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 36091440

約数和(自身を除く): 20306060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 557, 1090, 1114, 1417, 2180, 2228, 2785, 2834, 5570, 5668, 7085, 7241, 11140, 14170, 14482, 28340, 28964, 36205, 60713, 72410, 121426, 144820, 242852, 303565, 607130, 789269, 1214260, 1578538, 3157076, 3946345, 7892690, 15785380]

約数ペア:

[(1, 15785380), (2, 7892690), (4, 3946345), (5, 3157076), (10, 1578538), (13, 1214260), (20, 789269), (26, 607130), (52, 303565), (65, 242852), (109, 144820), (130, 121426), (218, 72410), (260, 60713), (436, 36205), (545, 28964), (557, 28340), (1090, 14482), (1114, 14170), (1417, 11140), (2180, 7241), (2228, 7085), (2785, 5668), (2834, 5570)]