20315405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 27907200

約数和(自身を除く): 7591795

約数列:

[1, 5, 11, 37, 55, 67, 149, 185, 335, 407, 737, 745, 1639, 2035, 2479, 3685, 5513, 8195, 9983, 12395, 27269, 27565, 49915, 60643, 109813, 136345, 303215, 369371, 549065, 1846855, 4063081, 20315405]

約数ペア:

[(1, 20315405), (5, 4063081), (11, 1846855), (37, 549065), (55, 369371), (67, 303215), (149, 136345), (185, 109813), (335, 60643), (407, 49915), (737, 27565), (745, 27269), (1639, 12395), (2035, 9983), (2479, 8195), (3685, 5513)]