18916780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{743}}^1$

素因数の和:838

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 23580500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 134, 190, 268, 335, 380, 670, 743, 1273, 1340, 1486, 2546, 2972, 3715, 5092, 6365, 7430, 12730, 14117, 14860, 25460, 28234, 49781, 56468, 70585, 99562, 141170, 199124, 248905, 282340, 497810, 945839, 995620, 1891678, 3783356, 4729195, 9458390, 18916780]

約数ペア:

[(1, 18916780), (2, 9458390), (4, 4729195), (5, 3783356), (10, 1891678), (19, 995620), (20, 945839), (38, 497810), (67, 282340), (76, 248905), (95, 199124), (134, 141170), (190, 99562), (268, 70585), (335, 56468), (380, 49781), (670, 28234), (743, 25460), (1273, 14860), (1340, 14117), (1486, 12730), (2546, 7430), (2972, 6365), (3715, 5092)]