78974980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{587}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 196185024

約数和(自身を除く): 117210044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 587, 620, 868, 961, 1085, 1174, 1922, 2170, 2348, 2935, 3844, 4109, 4340, 4805, 5870, 6727, 8218, 9610, 11740, 13454, 16436, 18197, 19220, 20545, 26908, 33635, 36394, 41090, 67270, 72788, 82180, 90985, 127379, 134540, 181970, 254758, 363940, 509516, 564107, 636895, 1128214, 1273790, 2256428, 2547580, 2820535, 3948749, 5641070, 7897498, 11282140, 15794996, 19743745, 39487490, 78974980]

約数ペア:

[(1, 78974980), (2, 39487490), (4, 19743745), (5, 15794996), (7, 11282140), (10, 7897498), (14, 5641070), (20, 3948749), (28, 2820535), (31, 2547580), (35, 2256428), (62, 1273790), (70, 1128214), (124, 636895), (140, 564107), (155, 509516), (217, 363940), (310, 254758), (434, 181970), (587, 134540), (620, 127379), (868, 90985), (961, 82180), (1085, 72788), (1174, 67270), (1922, 41090), (2170, 36394), (2348, 33635), (2935, 26908), (3844, 20545), (4109, 19220), (4340, 18197), (4805, 16436), (5870, 13454), (6727, 11740), (8218, 9610)]