12996440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 30965760

約数和(自身を除く): 17969320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 223, 235, 248, 310, 376, 446, 470, 620, 892, 940, 1115, 1240, 1457, 1784, 1880, 2230, 2914, 4460, 5828, 6913, 7285, 8920, 10481, 11656, 13826, 14570, 20962, 27652, 29140, 34565, 41924, 52405, 55304, 58280, 69130, 83848, 104810, 138260, 209620, 276520, 324911, 419240, 649822, 1299644, 1624555, 2599288, 3249110, 6498220, 12996440]

約数ペア:

[(1, 12996440), (2, 6498220), (4, 3249110), (5, 2599288), (8, 1624555), (10, 1299644), (20, 649822), (31, 419240), (40, 324911), (47, 276520), (62, 209620), (94, 138260), (124, 104810), (155, 83848), (188, 69130), (223, 58280), (235, 55304), (248, 52405), (310, 41924), (376, 34565), (446, 29140), (470, 27652), (620, 20962), (892, 14570), (940, 13826), (1115, 11656), (1240, 10481), (1457, 8920), (1784, 7285), (1880, 6913), (2230, 5828), (2914, 4460)]