81260660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5897}}^1$

素因数の和:5972

約数の個数: 48

約数和(自身を含む): 187273296

約数和(自身を除く): 106012636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2756, 3445, 5897, 6890, 11794, 13780, 23588, 29485, 58970, 76661, 117940, 153322, 306644, 312541, 383305, 625082, 766610, 1250164, 1533220, 1562705, 3125410, 4063033, 6250820, 8126066, 16252132, 20315165, 40630330, 81260660]

約数ペア:

[(1, 81260660), (2, 40630330), (4, 20315165), (5, 16252132), (10, 8126066), (13, 6250820), (20, 4063033), (26, 3125410), (52, 1562705), (53, 1533220), (65, 1250164), (106, 766610), (130, 625082), (212, 383305), (260, 312541), (265, 306644), (530, 153322), (689, 117940), (1060, 76661), (1378, 58970), (2756, 29485), (3445, 23588), (5897, 13780), (6890, 11794)]