21790685

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 32285952

約数和(自身を除く): 10495267

約数列:

[1, 5, 7, 17, 35, 53, 85, 119, 265, 371, 595, 691, 901, 1855, 3455, 4505, 4837, 6307, 11747, 24185, 31535, 36623, 58735, 82229, 183115, 256361, 411145, 622591, 1281805, 3112955, 4358137, 21790685]

約数ペア:

[(1, 21790685), (5, 4358137), (7, 3112955), (17, 1281805), (35, 622591), (53, 411145), (85, 256361), (119, 183115), (265, 82229), (371, 58735), (595, 36623), (691, 31535), (901, 24185), (1855, 11747), (3455, 6307), (4505, 4837)]