12638320

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:913

約数の個数: 40

約数和(自身を含む): 29551680

約数和(自身を除く): 16913360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 661, 956, 1195, 1322, 1912, 2390, 2644, 3305, 3824, 4780, 5288, 6610, 9560, 10576, 13220, 19120, 26440, 52880, 157979, 315958, 631916, 789895, 1263832, 1579790, 2527664, 3159580, 6319160, 12638320]

約数ペア:

[(1, 12638320), (2, 6319160), (4, 3159580), (5, 2527664), (8, 1579790), (10, 1263832), (16, 789895), (20, 631916), (40, 315958), (80, 157979), (239, 52880), (478, 26440), (661, 19120), (956, 13220), (1195, 10576), (1322, 9560), (1912, 6610), (2390, 5288), (2644, 4780), (3305, 3824)]