20731515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{569}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 38085120

約数和(自身を除く): 17353605

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 347, 569, 1041, 1707, 1735, 2429, 2845, 3983, 5205, 7287, 8535, 11949, 12145, 19915, 36435, 59745, 197443, 592329, 987215, 1382101, 2961645, 4146303, 6910505, 20731515]

約数ペア:

[(1, 20731515), (3, 6910505), (5, 4146303), (7, 2961645), (15, 1382101), (21, 987215), (35, 592329), (105, 197443), (347, 59745), (569, 36435), (1041, 19915), (1707, 12145), (1735, 11949), (2429, 8535), (2845, 7287), (3983, 5205)]