15515960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6359}}^1$

素因数の和:6431

約数の個数: 32

約数和(自身を含む): 35488800

約数和(自身を除く): 19972840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6359, 12718, 25436, 31795, 50872, 63590, 127180, 254360, 387899, 775798, 1551596, 1939495, 3103192, 3878990, 7757980, 15515960]

約数ペア:

[(1, 15515960), (2, 7757980), (4, 3878990), (5, 3103192), (8, 1939495), (10, 1551596), (20, 775798), (40, 387899), (61, 254360), (122, 127180), (244, 63590), (305, 50872), (488, 31795), (610, 25436), (1220, 12718), (2440, 6359)]