640928420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{100459}}^1$

素因数の和:100508

約数の個数: 48

約数和(自身を含む): 1518955200

約数和(自身を除く): 878026780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 6380, 100459, 200918, 401836, 502295, 1004590, 1105049, 2009180, 2210098, 2913311, 4420196, 5525245, 5826622, 11050490, 11653244, 14566555, 22100980, 29133110, 32046421, 58266220, 64092842, 128185684, 160232105, 320464210, 640928420]

約数ペア:

[(1, 640928420), (2, 320464210), (4, 160232105), (5, 128185684), (10, 64092842), (11, 58266220), (20, 32046421), (22, 29133110), (29, 22100980), (44, 14566555), (55, 11653244), (58, 11050490), (110, 5826622), (116, 5525245), (145, 4420196), (220, 2913311), (290, 2210098), (319, 2009180), (580, 1105049), (638, 1004590), (1276, 502295), (1595, 401836), (3190, 200918), (6380, 100459)]