90640760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{323717}}^1$

素因数の和:323735

約数の個数: 32

約数和(自身を含む): 233076960

約数和(自身を除く): 142436200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 323717, 647434, 1294868, 1618585, 2266019, 2589736, 3237170, 4532038, 6474340, 9064076, 11330095, 12948680, 18128152, 22660190, 45320380, 90640760]

約数ペア:

[(1, 90640760), (2, 45320380), (4, 22660190), (5, 18128152), (7, 12948680), (8, 11330095), (10, 9064076), (14, 6474340), (20, 4532038), (28, 3237170), (35, 2589736), (40, 2266019), (56, 1618585), (70, 1294868), (140, 647434), (280, 323717)]