1987209505

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1\times {\mathrm{601}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 2501902368

約数和(自身を除く): 514692863

約数列:

[1, 5, 37, 61, 185, 293, 305, 601, 1465, 2257, 3005, 10841, 11285, 17873, 22237, 36661, 54205, 89365, 111185, 176093, 183305, 661301, 880465, 1356457, 3306505, 6515441, 6782285, 10741673, 32577205, 53708365, 397441901, 1987209505]

約数ペア:

[(1, 1987209505), (5, 397441901), (37, 53708365), (61, 32577205), (185, 10741673), (293, 6782285), (305, 6515441), (601, 3306505), (1465, 1356457), (2257, 880465), (3005, 661301), (10841, 183305), (11285, 176093), (17873, 111185), (22237, 89365), (36661, 54205)]