20171620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{967}}^1$

素因数の和:1132

約数の個数: 48

約数和(自身を含む): 48787200

約数和(自身を除く): 28615580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 967, 1043, 1490, 1934, 2086, 2980, 3868, 4172, 4835, 5215, 6769, 9670, 10430, 13538, 19340, 20860, 27076, 33845, 67690, 135380, 144083, 288166, 576332, 720415, 1008581, 1440830, 2017162, 2881660, 4034324, 5042905, 10085810, 20171620]

約数ペア:

[(1, 20171620), (2, 10085810), (4, 5042905), (5, 4034324), (7, 2881660), (10, 2017162), (14, 1440830), (20, 1008581), (28, 720415), (35, 576332), (70, 288166), (140, 144083), (149, 135380), (298, 67690), (596, 33845), (745, 27076), (967, 20860), (1043, 19340), (1490, 13538), (1934, 10430), (2086, 9670), (2980, 6769), (3868, 5215), (4172, 4835)]