20007855

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3343}}^1$

素因数の和:3380

約数の個数: 48

約数和(自身を含む): 41733120

約数和(自身を除く): 21725265

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3343, 5985, 10029, 16715, 23401, 30087, 50145, 63517, 70203, 117005, 150435, 190551, 210609, 317585, 351015, 444619, 571653, 952755, 1053045, 1333857, 2223095, 2858265, 4001571, 6669285, 20007855]

約数ペア:

[(1, 20007855), (3, 6669285), (5, 4001571), (7, 2858265), (9, 2223095), (15, 1333857), (19, 1053045), (21, 952755), (35, 571653), (45, 444619), (57, 351015), (63, 317585), (95, 210609), (105, 190551), (133, 150435), (171, 117005), (285, 70203), (315, 63517), (399, 50145), (665, 30087), (855, 23401), (1197, 16715), (1995, 10029), (3343, 5985)]