20407660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11213}}^1$

素因数の和:11242

約数の個数: 48

約数和(自身を含む): 52750656

約数和(自身を除く): 32342996

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11213, 22426, 44852, 56065, 78491, 112130, 145769, 156982, 224260, 291538, 313964, 392455, 583076, 728845, 784910, 1020383, 1457690, 1569820, 2040766, 2915380, 4081532, 5101915, 10203830, 20407660]

約数ペア:

[(1, 20407660), (2, 10203830), (4, 5101915), (5, 4081532), (7, 2915380), (10, 2040766), (13, 1569820), (14, 1457690), (20, 1020383), (26, 784910), (28, 728845), (35, 583076), (52, 392455), (65, 313964), (70, 291538), (91, 224260), (130, 156982), (140, 145769), (182, 112130), (260, 78491), (364, 56065), (455, 44852), (910, 22426), (1820, 11213)]