18308680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 44861040

約数和(自身を除く): 26552360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 137, 257, 260, 274, 514, 520, 548, 685, 1028, 1096, 1285, 1370, 1781, 2056, 2570, 2740, 3341, 3562, 5140, 5480, 6682, 7124, 8905, 10280, 13364, 14248, 16705, 17810, 26728, 33410, 35209, 35620, 66820, 70418, 71240, 133640, 140836, 176045, 281672, 352090, 457717, 704180, 915434, 1408360, 1830868, 2288585, 3661736, 4577170, 9154340, 18308680]

約数ペア:

[(1, 18308680), (2, 9154340), (4, 4577170), (5, 3661736), (8, 2288585), (10, 1830868), (13, 1408360), (20, 915434), (26, 704180), (40, 457717), (52, 352090), (65, 281672), (104, 176045), (130, 140836), (137, 133640), (257, 71240), (260, 70418), (274, 66820), (514, 35620), (520, 35209), (548, 33410), (685, 26728), (1028, 17810), (1096, 16705), (1285, 14248), (1370, 13364), (1781, 10280), (2056, 8905), (2570, 7124), (2740, 6682), (3341, 5480), (3562, 5140)]