18886456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7309}}^1$

素因数の和:7351

約数の個数: 32

約数和(自身を含む): 39474000

約数和(自身を除く): 20587544

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 7309, 14618, 29236, 58472, 124253, 138871, 248506, 277742, 497012, 555484, 994024, 1110968, 2360807, 4721614, 9443228, 18886456]

約数ペア:

[(1, 18886456), (2, 9443228), (4, 4721614), (8, 2360807), (17, 1110968), (19, 994024), (34, 555484), (38, 497012), (68, 277742), (76, 248506), (136, 138871), (152, 124253), (323, 58472), (646, 29236), (1292, 14618), (2584, 7309)]