80001220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23669}}^1$

素因数の和:23704

約数の個数: 36

約数和(自身を含む): 181927620

約数和(自身を除く): 101926400

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 23669, 47338, 94676, 118345, 236690, 307697, 473380, 615394, 1230788, 1538485, 3076970, 4000061, 6153940, 8000122, 16000244, 20000305, 40000610, 80001220]

約数ペア:

[(1, 80001220), (2, 40000610), (4, 20000305), (5, 16000244), (10, 8000122), (13, 6153940), (20, 4000061), (26, 3076970), (52, 1538485), (65, 1230788), (130, 615394), (169, 473380), (260, 307697), (338, 236690), (676, 118345), (845, 94676), (1690, 47338), (3380, 23669)]