12211820

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 26611200

約数和(自身を除く): 14399380

約数列:

[1, 2, 4, 5, 10, 20, 59, 79, 118, 131, 158, 236, 262, 295, 316, 395, 524, 590, 655, 790, 1180, 1310, 1580, 2620, 4661, 7729, 9322, 10349, 15458, 18644, 20698, 23305, 30916, 38645, 41396, 46610, 51745, 77290, 93220, 103490, 154580, 206980, 610591, 1221182, 2442364, 3052955, 6105910, 12211820]

約数ペア:

[(1, 12211820), (2, 6105910), (4, 3052955), (5, 2442364), (10, 1221182), (20, 610591), (59, 206980), (79, 154580), (118, 103490), (131, 93220), (158, 77290), (236, 51745), (262, 46610), (295, 41396), (316, 38645), (395, 30916), (524, 23305), (590, 20698), (655, 18644), (790, 15458), (1180, 10349), (1310, 9322), (1580, 7729), (2620, 4661)]