20641412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 41879040

約数和(自身を除く): 21237628

約数列:

[1, 2, 4, 11, 22, 31, 37, 44, 62, 74, 124, 148, 341, 407, 409, 682, 814, 818, 1147, 1364, 1628, 1636, 2294, 4499, 4588, 8998, 12617, 12679, 15133, 17996, 25234, 25358, 30266, 50468, 50716, 60532, 139469, 166463, 278938, 332926, 469123, 557876, 665852, 938246, 1876492, 5160353, 10320706, 20641412]

約数ペア:

[(1, 20641412), (2, 10320706), (4, 5160353), (11, 1876492), (22, 938246), (31, 665852), (37, 557876), (44, 469123), (62, 332926), (74, 278938), (124, 166463), (148, 139469), (341, 60532), (407, 50716), (409, 50468), (682, 30266), (814, 25358), (818, 25234), (1147, 17996), (1364, 15133), (1628, 12679), (1636, 12617), (2294, 8998), (4499, 4588)]