20207005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 10032995

約数列:

[1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 499, 623, 1157, 2495, 3115, 3493, 5785, 6487, 8099, 17465, 32435, 40495, 44411, 45409, 222055, 227045, 310877, 577343, 1554385, 2886715, 4041401, 20207005]

約数ペア:

[(1, 20207005), (5, 4041401), (7, 2886715), (13, 1554385), (35, 577343), (65, 310877), (89, 227045), (91, 222055), (445, 45409), (455, 44411), (499, 40495), (623, 32435), (1157, 17465), (2495, 8099), (3115, 6487), (3493, 5785)]