20193940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{769}}^1$

素因数の和:892

約数の個数: 48

約数和(自身を含む): 46181520

約数和(自身を除く): 25987580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 769, 1010, 1313, 1538, 2020, 2626, 3076, 3845, 5252, 6565, 7690, 9997, 13130, 15380, 19994, 26260, 39988, 49985, 77669, 99970, 155338, 199940, 310676, 388345, 776690, 1009697, 1553380, 2019394, 4038788, 5048485, 10096970, 20193940]

約数ペア:

[(1, 20193940), (2, 10096970), (4, 5048485), (5, 4038788), (10, 2019394), (13, 1553380), (20, 1009697), (26, 776690), (52, 388345), (65, 310676), (101, 199940), (130, 155338), (202, 99970), (260, 77669), (404, 49985), (505, 39988), (769, 26260), (1010, 19994), (1313, 15380), (1538, 13130), (2020, 9997), (2626, 7690), (3076, 6565), (3845, 5252)]