19688820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1373}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 55399680

約数和(自身を除く): 35710860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1373, 1434, 2390, 2746, 2868, 3585, 4119, 4780, 5492, 6865, 7170, 8238, 13730, 14340, 16476, 20595, 27460, 41190, 82380, 328147, 656294, 984441, 1312588, 1640735, 1968882, 3281470, 3937764, 4922205, 6562940, 9844410, 19688820]

約数ペア:

[(1, 19688820), (2, 9844410), (3, 6562940), (4, 4922205), (5, 3937764), (6, 3281470), (10, 1968882), (12, 1640735), (15, 1312588), (20, 984441), (30, 656294), (60, 328147), (239, 82380), (478, 41190), (717, 27460), (956, 20595), (1195, 16476), (1373, 14340), (1434, 13730), (2390, 8238), (2746, 7170), (2868, 6865), (3585, 5492), (4119, 4780)]