20042470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40903}}^1$

素因数の和:40924

約数の個数: 24

約数和(自身を含む): 41967504

約数和(自身を除く): 21925034

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40903, 81806, 204515, 286321, 409030, 572642, 1431605, 2004247, 2863210, 4008494, 10021235, 20042470]

約数ペア:

[(1, 20042470), (2, 10021235), (5, 4008494), (7, 2863210), (10, 2004247), (14, 1431605), (35, 572642), (49, 409030), (70, 286321), (98, 204515), (245, 81806), (490, 40903)]