21714940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1777}}^1$

素因数の和:1846

約数の個数: 48

約数和(自身を含む): 50182272

約数和(自身を除く): 28467332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1777, 2444, 3055, 3554, 6110, 7108, 8885, 12220, 17770, 23101, 35540, 46202, 83519, 92404, 115505, 167038, 231010, 334076, 417595, 462020, 835190, 1085747, 1670380, 2171494, 4342988, 5428735, 10857470, 21714940]

約数ペア:

[(1, 21714940), (2, 10857470), (4, 5428735), (5, 4342988), (10, 2171494), (13, 1670380), (20, 1085747), (26, 835190), (47, 462020), (52, 417595), (65, 334076), (94, 231010), (130, 167038), (188, 115505), (235, 92404), (260, 83519), (470, 46202), (611, 35540), (940, 23101), (1222, 17770), (1777, 12220), (2444, 8885), (3055, 7108), (3554, 6110)]