20761780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1699}}^1$

素因数の和:1768

約数の個数: 48

約数和(自身を含む): 47980800

約数和(自身を除く): 27219020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1699, 2444, 3055, 3398, 6110, 6796, 8495, 12220, 16990, 22087, 33980, 44174, 79853, 88348, 110435, 159706, 220870, 319412, 399265, 441740, 798530, 1038089, 1597060, 2076178, 4152356, 5190445, 10380890, 20761780]

約数ペア:

[(1, 20761780), (2, 10380890), (4, 5190445), (5, 4152356), (10, 2076178), (13, 1597060), (20, 1038089), (26, 798530), (47, 441740), (52, 399265), (65, 319412), (94, 220870), (130, 159706), (188, 110435), (235, 88348), (260, 79853), (470, 44174), (611, 33980), (940, 22087), (1222, 16990), (1699, 12220), (2444, 8495), (3055, 6796), (3398, 6110)]