18728360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{317}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 48539520

約数和(自身を除く): 29811160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 317, 422, 634, 844, 1055, 1268, 1477, 1585, 1688, 2110, 2219, 2536, 2954, 3170, 4220, 4438, 5908, 6340, 7385, 8440, 8876, 11095, 11816, 12680, 14770, 17752, 22190, 29540, 44380, 59080, 66887, 88760, 133774, 267548, 334435, 468209, 535096, 668870, 936418, 1337740, 1872836, 2341045, 2675480, 3745672, 4682090, 9364180, 18728360]

約数ペア:

[(1, 18728360), (2, 9364180), (4, 4682090), (5, 3745672), (7, 2675480), (8, 2341045), (10, 1872836), (14, 1337740), (20, 936418), (28, 668870), (35, 535096), (40, 468209), (56, 334435), (70, 267548), (140, 133774), (211, 88760), (280, 66887), (317, 59080), (422, 44380), (634, 29540), (844, 22190), (1055, 17752), (1268, 14770), (1477, 12680), (1585, 11816), (1688, 11095), (2110, 8876), (2219, 8440), (2536, 7385), (2954, 6340), (3170, 5908), (4220, 4438)]