77690980

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 167086080

約数和(自身を除く): 89395100

約数列:

[1, 2, 4, 5, 10, 20, 73, 127, 146, 254, 292, 365, 419, 508, 635, 730, 838, 1270, 1460, 1676, 2095, 2540, 4190, 8380, 9271, 18542, 30587, 37084, 46355, 53213, 61174, 92710, 106426, 122348, 152935, 185420, 212852, 266065, 305870, 532130, 611740, 1064260, 3884549, 7769098, 15538196, 19422745, 38845490, 77690980]

約数ペア:

[(1, 77690980), (2, 38845490), (4, 19422745), (5, 15538196), (10, 7769098), (20, 3884549), (73, 1064260), (127, 611740), (146, 532130), (254, 305870), (292, 266065), (365, 212852), (419, 185420), (508, 152935), (635, 122348), (730, 106426), (838, 92710), (1270, 61174), (1460, 53213), (1676, 46355), (2095, 37084), (2540, 30587), (4190, 18542), (8380, 9271)]