28154020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 60802560

約数和(自身を除く): 32648540

約数列:

[1, 2, 4, 5, 10, 20, 79, 103, 158, 173, 206, 316, 346, 395, 412, 515, 692, 790, 865, 1030, 1580, 1730, 2060, 3460, 8137, 13667, 16274, 17819, 27334, 32548, 35638, 40685, 54668, 68335, 71276, 81370, 89095, 136670, 162740, 178190, 273340, 356380, 1407701, 2815402, 5630804, 7038505, 14077010, 28154020]

約数ペア:

[(1, 28154020), (2, 14077010), (4, 7038505), (5, 5630804), (10, 2815402), (20, 1407701), (79, 356380), (103, 273340), (158, 178190), (173, 162740), (206, 136670), (316, 89095), (346, 81370), (395, 71276), (412, 68335), (515, 54668), (692, 40685), (790, 35638), (865, 32548), (1030, 27334), (1580, 17819), (1730, 16274), (2060, 13667), (3460, 8137)]