28157480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{313}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 68841360

約数和(自身を除く): 40683880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 173, 260, 313, 346, 520, 626, 692, 865, 1252, 1384, 1565, 1730, 2249, 2504, 3130, 3460, 4069, 4498, 6260, 6920, 8138, 8996, 11245, 12520, 16276, 17992, 20345, 22490, 32552, 40690, 44980, 54149, 81380, 89960, 108298, 162760, 216596, 270745, 433192, 541490, 703937, 1082980, 1407874, 2165960, 2815748, 3519685, 5631496, 7039370, 14078740, 28157480]

約数ペア:

[(1, 28157480), (2, 14078740), (4, 7039370), (5, 5631496), (8, 3519685), (10, 2815748), (13, 2165960), (20, 1407874), (26, 1082980), (40, 703937), (52, 541490), (65, 433192), (104, 270745), (130, 216596), (173, 162760), (260, 108298), (313, 89960), (346, 81380), (520, 54149), (626, 44980), (692, 40690), (865, 32552), (1252, 22490), (1384, 20345), (1565, 17992), (1730, 16276), (2249, 12520), (2504, 11245), (3130, 8996), (3460, 8138), (4069, 6920), (4498, 6260)]