20508733427

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{40009}}^1$

素因数の和:40203

約数の個数: 32

約数和(自身を含む): 26026344960

約数和(自身を除く): 5517611533

約数列:

[1, 7, 13, 43, 91, 131, 301, 559, 917, 1703, 3913, 5633, 11921, 39431, 40009, 73229, 280063, 512603, 520117, 1720387, 3640819, 5241179, 12042709, 22365031, 36688253, 68135327, 156555217, 225370697, 476947289, 1577594879, 2929819061, 20508733427]

約数ペア:

[(1, 20508733427), (7, 2929819061), (13, 1577594879), (43, 476947289), (91, 225370697), (131, 156555217), (301, 68135327), (559, 36688253), (917, 22365031), (1703, 12042709), (3913, 5241179), (5633, 3640819), (11921, 1720387), (39431, 520117), (40009, 512603), (73229, 280063)]