199814840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{161141}}^1$

素因数の和:161183

約数の個数: 32

約数和(自身を含む): 464088960

約数和(自身を除く): 264274120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 161141, 322282, 644564, 805705, 1289128, 1611410, 3222820, 4995371, 6445640, 9990742, 19981484, 24976855, 39962968, 49953710, 99907420, 199814840]

約数ペア:

[(1, 199814840), (2, 99907420), (4, 49953710), (5, 39962968), (8, 24976855), (10, 19981484), (20, 9990742), (31, 6445640), (40, 4995371), (62, 3222820), (124, 1611410), (155, 1289128), (248, 805705), (310, 644564), (620, 322282), (1240, 161141)]