20827240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74383}}^1$

素因数の和:74401

約数の個数: 32

約数和(自身を含む): 53556480

約数和(自身を除く): 32729240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74383, 148766, 297532, 371915, 520681, 595064, 743830, 1041362, 1487660, 2082724, 2603405, 2975320, 4165448, 5206810, 10413620, 20827240]

約数ペア:

[(1, 20827240), (2, 10413620), (4, 5206810), (5, 4165448), (7, 2975320), (8, 2603405), (10, 2082724), (14, 1487660), (20, 1041362), (28, 743830), (35, 595064), (40, 520681), (56, 371915), (70, 297532), (140, 148766), (280, 74383)]