15519980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6521}}^1$

素因数の和:6554

約数の個数: 48

約数和(自身を含む): 39445056

約数和(自身を除く): 23925076

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 6521, 13042, 26084, 32605, 45647, 65210, 91294, 110857, 130420, 182588, 221714, 228235, 443428, 456470, 554285, 775999, 912940, 1108570, 1551998, 2217140, 3103996, 3879995, 7759990, 15519980]

約数ペア:

[(1, 15519980), (2, 7759990), (4, 3879995), (5, 3103996), (7, 2217140), (10, 1551998), (14, 1108570), (17, 912940), (20, 775999), (28, 554285), (34, 456470), (35, 443428), (68, 228235), (70, 221714), (85, 182588), (119, 130420), (140, 110857), (170, 91294), (238, 65210), (340, 45647), (476, 32605), (595, 26084), (1190, 13042), (2380, 6521)]