77442460

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 166168800

約数和(自身を除く): 88726340

約数列:

[1, 2, 4, 5, 10, 20, 89, 139, 178, 278, 313, 356, 445, 556, 626, 695, 890, 1252, 1390, 1565, 1780, 2780, 3130, 6260, 12371, 24742, 27857, 43507, 49484, 55714, 61855, 87014, 111428, 123710, 139285, 174028, 217535, 247420, 278570, 435070, 557140, 870140, 3872123, 7744246, 15488492, 19360615, 38721230, 77442460]

約数ペア:

[(1, 77442460), (2, 38721230), (4, 19360615), (5, 15488492), (10, 7744246), (20, 3872123), (89, 870140), (139, 557140), (178, 435070), (278, 278570), (313, 247420), (356, 217535), (445, 174028), (556, 139285), (626, 123710), (695, 111428), (890, 87014), (1252, 61855), (1390, 55714), (1565, 49484), (1780, 43507), (2780, 27857), (3130, 24742), (6260, 12371)]