402290

素因数分解:

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

素因数の和:842

約数の個数: 24

約数和(自身を含む): 843372

約数和(自身を除く): 441082

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 821, 1642, 4105, 5747, 8210, 11494, 28735, 40229, 57470, 80458, 201145, 402290]

約数ペア:

[(1, 402290), (2, 201145), (5, 80458), (7, 57470), (10, 40229), (14, 28735), (35, 11494), (49, 8210), (70, 5747), (98, 4105), (245, 1642), (490, 821)]