19697340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25253}}^1$

素因数の和:25278

約数の個数: 48

約数和(自身を含む): 59397408

約数和(自身を除く): 39700068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25253, 50506, 75759, 101012, 126265, 151518, 252530, 303036, 328289, 378795, 505060, 656578, 757590, 984867, 1313156, 1515180, 1641445, 1969734, 3282890, 3939468, 4924335, 6565780, 9848670, 19697340]

約数ペア:

[(1, 19697340), (2, 9848670), (3, 6565780), (4, 4924335), (5, 3939468), (6, 3282890), (10, 1969734), (12, 1641445), (13, 1515180), (15, 1313156), (20, 984867), (26, 757590), (30, 656578), (39, 505060), (52, 378795), (60, 328289), (65, 303036), (78, 252530), (130, 151518), (156, 126265), (195, 101012), (260, 75759), (390, 50506), (780, 25253)]