64420840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3571}}^1$

素因数の和:3634

約数の個数: 64

約数和(自身を含む): 162025920

約数和(自身を除く): 97605080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3571, 3608, 4510, 7142, 9020, 14284, 17855, 18040, 28568, 35710, 39281, 71420, 78562, 142840, 146411, 157124, 196405, 292822, 314248, 392810, 585644, 732055, 785620, 1171288, 1464110, 1571240, 1610521, 2928220, 3221042, 5856440, 6442084, 8052605, 12884168, 16105210, 32210420, 64420840]

約数ペア:

[(1, 64420840), (2, 32210420), (4, 16105210), (5, 12884168), (8, 8052605), (10, 6442084), (11, 5856440), (20, 3221042), (22, 2928220), (40, 1610521), (41, 1571240), (44, 1464110), (55, 1171288), (82, 785620), (88, 732055), (110, 585644), (164, 392810), (205, 314248), (220, 292822), (328, 196405), (410, 157124), (440, 146411), (451, 142840), (820, 78562), (902, 71420), (1640, 39281), (1804, 35710), (2255, 28568), (3571, 18040), (3608, 17855), (4510, 14284), (7142, 9020)]