28210120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9661}}^1$

素因数の和:9745

約数の個数: 32

約数和(自身を含む): 64348920

約数和(自身を除く): 36138800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 9661, 19322, 38644, 48305, 77288, 96610, 193220, 386440, 705253, 1410506, 2821012, 3526265, 5642024, 7052530, 14105060, 28210120]

約数ペア:

[(1, 28210120), (2, 14105060), (4, 7052530), (5, 5642024), (8, 3526265), (10, 2821012), (20, 1410506), (40, 705253), (73, 386440), (146, 193220), (292, 96610), (365, 77288), (584, 48305), (730, 38644), (1460, 19322), (2920, 9661)]