21550270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9931}}^1$

素因数の和:9976

約数の個数: 32

約数和(自身を含む): 45766656

約数和(自身を除く): 24216386

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9931, 19862, 49655, 69517, 99310, 139034, 307861, 347585, 615722, 695170, 1539305, 2155027, 3078610, 4310054, 10775135, 21550270]

約数ペア:

[(1, 21550270), (2, 10775135), (5, 4310054), (7, 3078610), (10, 2155027), (14, 1539305), (31, 695170), (35, 615722), (62, 347585), (70, 307861), (155, 139034), (217, 99310), (310, 69517), (434, 49655), (1085, 19862), (2170, 9931)]