18890672

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 39060000

約数和(自身を除く): 20169328

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 199, 272, 349, 398, 698, 796, 1396, 1592, 2792, 3184, 3383, 5584, 5933, 6766, 11866, 13532, 23732, 27064, 47464, 54128, 69451, 94928, 138902, 277804, 555608, 1111216, 1180667, 2361334, 4722668, 9445336, 18890672]

約数ペア:

[(1, 18890672), (2, 9445336), (4, 4722668), (8, 2361334), (16, 1180667), (17, 1111216), (34, 555608), (68, 277804), (136, 138902), (199, 94928), (272, 69451), (349, 54128), (398, 47464), (698, 27064), (796, 23732), (1396, 13532), (1592, 11866), (2792, 6766), (3184, 5933), (3383, 5584)]