20279360

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:643

約数の個数: 56

約数和(自身を含む): 48768000

約数和(自身を除く): 28488640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 499, 508, 635, 998, 1016, 1270, 1996, 2032, 2495, 2540, 3992, 4064, 4990, 5080, 7984, 8128, 9980, 10160, 15968, 19960, 20320, 31936, 39920, 40640, 63373, 79840, 126746, 159680, 253492, 316865, 506984, 633730, 1013968, 1267460, 2027936, 2534920, 4055872, 5069840, 10139680, 20279360]

約数ペア:

[(1, 20279360), (2, 10139680), (4, 5069840), (5, 4055872), (8, 2534920), (10, 2027936), (16, 1267460), (20, 1013968), (32, 633730), (40, 506984), (64, 316865), (80, 253492), (127, 159680), (160, 126746), (254, 79840), (320, 63373), (499, 40640), (508, 39920), (635, 31936), (998, 20320), (1016, 19960), (1270, 15968), (1996, 10160), (2032, 9980), (2495, 8128), (2540, 7984), (3992, 5080), (4064, 4990)]