81556640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:486

約数の個数: 96

約数和(自身を含む): 212284800

約数和(自身を除く): 130728160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 149, 160, 176, 220, 298, 311, 352, 440, 596, 622, 745, 880, 1192, 1244, 1490, 1555, 1639, 1760, 2384, 2488, 2980, 3110, 3278, 3421, 4768, 4976, 5960, 6220, 6556, 6842, 8195, 9952, 11920, 12440, 13112, 13684, 16390, 17105, 23840, 24880, 26224, 27368, 32780, 34210, 46339, 49760, 52448, 54736, 65560, 68420, 92678, 109472, 131120, 136840, 185356, 231695, 262240, 273680, 370712, 463390, 509729, 547360, 741424, 926780, 1019458, 1482848, 1853560, 2038916, 2548645, 3707120, 4077832, 5097290, 7414240, 8155664, 10194580, 16311328, 20389160, 40778320, 81556640]

約数ペア:

[(1, 81556640), (2, 40778320), (4, 20389160), (5, 16311328), (8, 10194580), (10, 8155664), (11, 7414240), (16, 5097290), (20, 4077832), (22, 3707120), (32, 2548645), (40, 2038916), (44, 1853560), (55, 1482848), (80, 1019458), (88, 926780), (110, 741424), (149, 547360), (160, 509729), (176, 463390), (220, 370712), (298, 273680), (311, 262240), (352, 231695), (440, 185356), (596, 136840), (622, 131120), (745, 109472), (880, 92678), (1192, 68420), (1244, 65560), (1490, 54736), (1555, 52448), (1639, 49760), (1760, 46339), (2384, 34210), (2488, 32780), (2980, 27368), (3110, 26224), (3278, 24880), (3421, 23840), (4768, 17105), (4976, 16390), (5960, 13684), (6220, 13112), (6556, 12440), (6842, 11920), (8195, 9952)]