20940535

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 10739465

約数列:

[1, 5, 7, 11, 35, 55, 77, 109, 385, 499, 545, 763, 1199, 2495, 3493, 3815, 5489, 5995, 8393, 17465, 27445, 38423, 41965, 54391, 192115, 271955, 380737, 598301, 1903685, 2991505, 4188107, 20940535]

約数ペア:

[(1, 20940535), (5, 4188107), (7, 2991505), (11, 1903685), (35, 598301), (55, 380737), (77, 271955), (109, 192115), (385, 54391), (499, 41965), (545, 38423), (763, 27445), (1199, 17465), (2495, 8393), (3493, 5995), (3815, 5489)]