247811980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{6857}}^1$

素因数の和:7018

約数の個数: 48

約数和(自身を含む): 564550560

約数和(自身を除く): 316738580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 1390, 1807, 2780, 3614, 6857, 7228, 9035, 13714, 18070, 27428, 34285, 36140, 68570, 89141, 137140, 178282, 356564, 445705, 891410, 953123, 1782820, 1906246, 3812492, 4765615, 9531230, 12390599, 19062460, 24781198, 49562396, 61952995, 123905990, 247811980]

約数ペア:

[(1, 247811980), (2, 123905990), (4, 61952995), (5, 49562396), (10, 24781198), (13, 19062460), (20, 12390599), (26, 9531230), (52, 4765615), (65, 3812492), (130, 1906246), (139, 1782820), (260, 953123), (278, 891410), (556, 445705), (695, 356564), (1390, 178282), (1807, 137140), (2780, 89141), (3614, 68570), (6857, 36140), (7228, 34285), (9035, 27428), (13714, 18070)]