20459360

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1801}}^1$

素因数の和:1887

約数の個数: 48

約数和(自身を含む): 49043232

約数和(自身を除く): 28583872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1801, 2272, 2840, 3602, 5680, 7204, 9005, 11360, 14408, 18010, 28816, 36020, 57632, 72040, 127871, 144080, 255742, 288160, 511484, 639355, 1022968, 1278710, 2045936, 2557420, 4091872, 5114840, 10229680, 20459360]

約数ペア:

[(1, 20459360), (2, 10229680), (4, 5114840), (5, 4091872), (8, 2557420), (10, 2045936), (16, 1278710), (20, 1022968), (32, 639355), (40, 511484), (71, 288160), (80, 255742), (142, 144080), (160, 127871), (284, 72040), (355, 57632), (568, 36020), (710, 28816), (1136, 18010), (1420, 14408), (1801, 11360), (2272, 9005), (2840, 7204), (3602, 5680)]