19984760

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7457}}^1$

素因数の和:7535

約数の個数: 32

約数和(自身を含む): 45642960

約数和(自身を除く): 25658200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7457, 14914, 29828, 37285, 59656, 74570, 149140, 298280, 499619, 999238, 1998476, 2498095, 3996952, 4996190, 9992380, 19984760]

約数ペア:

[(1, 19984760), (2, 9992380), (4, 4996190), (5, 3996952), (8, 2498095), (10, 1998476), (20, 999238), (40, 499619), (67, 298280), (134, 149140), (268, 74570), (335, 59656), (536, 37285), (670, 29828), (1340, 14914), (2680, 7457)]