19840372

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^2$

素因数の和:200

約数の個数: 36

約数和(自身を含む): 37285248

約数和(自身を除く): 17444876

約数列:

[1, 2, 4, 31, 43, 61, 62, 86, 122, 124, 172, 244, 1333, 1891, 2623, 2666, 3721, 3782, 5246, 5332, 7442, 7564, 10492, 14884, 81313, 115351, 160003, 162626, 230702, 320006, 325252, 461404, 640012, 4960093, 9920186, 19840372]

約数ペア:

[(1, 19840372), (2, 9920186), (4, 4960093), (31, 640012), (43, 461404), (61, 325252), (62, 320006), (86, 230702), (122, 162626), (124, 160003), (172, 115351), (244, 81313), (1333, 14884), (1891, 10492), (2623, 7564), (2666, 7442), (3721, 5332), (3782, 5246)]