20020385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 10219615

約数列:

[1, 5, 7, 11, 35, 55, 77, 149, 349, 385, 745, 1043, 1639, 1745, 2443, 3839, 5215, 8195, 11473, 12215, 19195, 26873, 52001, 57365, 134365, 260005, 364007, 572011, 1820035, 2860055, 4004077, 20020385]

約数ペア:

[(1, 20020385), (5, 4004077), (7, 2860055), (11, 1820035), (35, 572011), (55, 364007), (77, 260005), (149, 134365), (349, 57365), (385, 52001), (745, 26873), (1043, 19195), (1639, 12215), (1745, 11473), (2443, 8195), (3839, 5215)]