21360040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41077}}^1$

素因数の和:41101

約数の個数: 32

約数和(自身を含む): 51758280

約数和(自身を除く): 30398240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41077, 82154, 164308, 205385, 328616, 410770, 534001, 821540, 1068002, 1643080, 2136004, 2670005, 4272008, 5340010, 10680020, 21360040]

約数ペア:

[(1, 21360040), (2, 10680020), (4, 5340010), (5, 4272008), (8, 2670005), (10, 2136004), (13, 1643080), (20, 1068002), (26, 821540), (40, 534001), (52, 410770), (65, 328616), (104, 205385), (130, 164308), (260, 82154), (520, 41077)]