18217990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{821}}^1$

素因数の和:1152

約数の個数: 32

約数和(自身を含む): 37641024

約数和(自身を除く): 19423034

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 317, 634, 821, 1585, 1642, 2219, 3170, 4105, 4438, 5747, 8210, 11095, 11494, 22190, 28735, 57470, 260257, 520514, 1301285, 1821799, 2602570, 3643598, 9108995, 18217990]

約数ペア:

[(1, 18217990), (2, 9108995), (5, 3643598), (7, 2602570), (10, 1821799), (14, 1301285), (35, 520514), (70, 260257), (317, 57470), (634, 28735), (821, 22190), (1585, 11494), (1642, 11095), (2219, 8210), (3170, 5747), (4105, 4438)]