18154990

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 21013010

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 67, 70, 79, 98, 134, 158, 245, 335, 343, 395, 469, 490, 553, 670, 686, 790, 938, 1106, 1715, 2345, 2765, 3283, 3430, 3871, 4690, 5293, 5530, 6566, 7742, 10586, 16415, 19355, 22981, 26465, 27097, 32830, 37051, 38710, 45962, 52930, 54194, 74102, 114905, 135485, 185255, 229810, 259357, 270970, 370510, 518714, 1296785, 1815499, 2593570, 3630998, 9077495, 18154990]

約数ペア:

[(1, 18154990), (2, 9077495), (5, 3630998), (7, 2593570), (10, 1815499), (14, 1296785), (35, 518714), (49, 370510), (67, 270970), (70, 259357), (79, 229810), (98, 185255), (134, 135485), (158, 114905), (245, 74102), (335, 54194), (343, 52930), (395, 45962), (469, 38710), (490, 37051), (553, 32830), (670, 27097), (686, 26465), (790, 22981), (938, 19355), (1106, 16415), (1715, 10586), (2345, 7742), (2765, 6566), (3283, 5530), (3430, 5293), (3871, 4690)]