20746215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{983}}^1$

素因数の和:1068

約数の個数: 48

約数和(自身を含む): 41753088

約数和(自身を除く): 21006873

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 983, 1005, 1407, 2345, 2949, 3015, 4221, 4915, 6881, 7035, 8847, 14745, 20643, 21105, 34405, 44235, 61929, 65861, 103215, 197583, 309645, 329305, 461027, 592749, 987915, 1383081, 2305135, 2963745, 4149243, 6915405, 20746215]

約数ペア:

[(1, 20746215), (3, 6915405), (5, 4149243), (7, 2963745), (9, 2305135), (15, 1383081), (21, 987915), (35, 592749), (45, 461027), (63, 329305), (67, 309645), (105, 197583), (201, 103215), (315, 65861), (335, 61929), (469, 44235), (603, 34405), (983, 21105), (1005, 20643), (1407, 14745), (2345, 8847), (2949, 7035), (3015, 6881), (4221, 4915)]