16880720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2671}}^1$

素因数の和:2763

約数の個数: 40

約数和(自身を含む): 39759360

約数和(自身を除く): 22878640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 2671, 3160, 5342, 6320, 10684, 13355, 21368, 26710, 42736, 53420, 106840, 211009, 213680, 422018, 844036, 1055045, 1688072, 2110090, 3376144, 4220180, 8440360, 16880720]

約数ペア:

[(1, 16880720), (2, 8440360), (4, 4220180), (5, 3376144), (8, 2110090), (10, 1688072), (16, 1055045), (20, 844036), (40, 422018), (79, 213680), (80, 211009), (158, 106840), (316, 53420), (395, 42736), (632, 26710), (790, 21368), (1264, 13355), (1580, 10684), (2671, 6320), (3160, 5342)]