28398580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2857}}^1$

素因数の和:2944

約数の個数: 48

約数和(自身を含む): 69140736

約数和(自身を除く): 40742156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 2857, 4970, 5714, 9940, 11428, 14285, 19999, 28570, 39998, 57140, 79996, 99995, 199990, 202847, 399980, 405694, 811388, 1014235, 1419929, 2028470, 2839858, 4056940, 5679716, 7099645, 14199290, 28398580]

約数ペア:

[(1, 28398580), (2, 14199290), (4, 7099645), (5, 5679716), (7, 4056940), (10, 2839858), (14, 2028470), (20, 1419929), (28, 1014235), (35, 811388), (70, 405694), (71, 399980), (140, 202847), (142, 199990), (284, 99995), (355, 79996), (497, 57140), (710, 39998), (994, 28570), (1420, 19999), (1988, 14285), (2485, 11428), (2857, 9940), (4970, 5714)]