20174720

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1087}}^1$

素因数の和:1135

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 29764480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 290, 320, 464, 580, 640, 928, 1087, 1160, 1856, 2174, 2320, 3712, 4348, 4640, 5435, 8696, 9280, 10870, 17392, 18560, 21740, 31523, 34784, 43480, 63046, 69568, 86960, 126092, 139136, 157615, 173920, 252184, 315230, 347840, 504368, 630460, 695680, 1008736, 1260920, 2017472, 2521840, 4034944, 5043680, 10087360, 20174720]

約数ペア:

[(1, 20174720), (2, 10087360), (4, 5043680), (5, 4034944), (8, 2521840), (10, 2017472), (16, 1260920), (20, 1008736), (29, 695680), (32, 630460), (40, 504368), (58, 347840), (64, 315230), (80, 252184), (116, 173920), (128, 157615), (145, 139136), (160, 126092), (232, 86960), (290, 69568), (320, 63046), (464, 43480), (580, 34784), (640, 31523), (928, 21740), (1087, 18560), (1160, 17392), (1856, 10870), (2174, 9280), (2320, 8696), (3712, 5435), (4348, 4640)]