20358940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4691}}^1$

素因数の和:4738

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 30089444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4691, 9382, 18764, 23455, 32837, 46910, 65674, 93820, 131348, 145421, 164185, 290842, 328370, 581684, 656740, 727105, 1017947, 1454210, 2035894, 2908420, 4071788, 5089735, 10179470, 20358940]

約数ペア:

[(1, 20358940), (2, 10179470), (4, 5089735), (5, 4071788), (7, 2908420), (10, 2035894), (14, 1454210), (20, 1017947), (28, 727105), (31, 656740), (35, 581684), (62, 328370), (70, 290842), (124, 164185), (140, 145421), (155, 131348), (217, 93820), (310, 65674), (434, 46910), (620, 32837), (868, 23455), (1085, 18764), (2170, 9382), (4340, 4691)]