20920660

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{823}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 46513152

約数和(自身を除く): 25592492

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 823, 1271, 1646, 2542, 3292, 4115, 5084, 6355, 8230, 12710, 16460, 25420, 25513, 33743, 51026, 67486, 102052, 127565, 134972, 168715, 255130, 337430, 510260, 674860, 1046033, 2092066, 4184132, 5230165, 10460330, 20920660]

約数ペア:

[(1, 20920660), (2, 10460330), (4, 5230165), (5, 4184132), (10, 2092066), (20, 1046033), (31, 674860), (41, 510260), (62, 337430), (82, 255130), (124, 168715), (155, 134972), (164, 127565), (205, 102052), (310, 67486), (410, 51026), (620, 33743), (820, 25513), (823, 25420), (1271, 16460), (1646, 12710), (2542, 8230), (3292, 6355), (4115, 5084)]