3968900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 9624384

約数和(自身を除く): 5655484

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 71, 86, 100, 130, 142, 172, 215, 260, 284, 325, 355, 430, 559, 650, 710, 860, 923, 1075, 1118, 1300, 1420, 1775, 1846, 2150, 2236, 2795, 3053, 3550, 3692, 4300, 4615, 5590, 6106, 7100, 9230, 11180, 12212, 13975, 15265, 18460, 23075, 27950, 30530, 39689, 46150, 55900, 61060, 76325, 79378, 92300, 152650, 158756, 198445, 305300, 396890, 793780, 992225, 1984450, 3968900]

約数ペア:

[(1, 3968900), (2, 1984450), (4, 992225), (5, 793780), (10, 396890), (13, 305300), (20, 198445), (25, 158756), (26, 152650), (43, 92300), (50, 79378), (52, 76325), (65, 61060), (71, 55900), (86, 46150), (100, 39689), (130, 30530), (142, 27950), (172, 23075), (215, 18460), (260, 15265), (284, 13975), (325, 12212), (355, 11180), (430, 9230), (559, 7100), (650, 6106), (710, 5590), (860, 4615), (923, 4300), (1075, 3692), (1118, 3550), (1300, 3053), (1420, 2795), (1775, 2236), (1846, 2150)]