12728820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16319}}^1$

素因数の和:16344

約数の個数: 48

約数和(自身を含む): 38384640

約数和(自身を除く): 25655820

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, 16319, 32638, 48957, 65276, 81595, 97914, 163190, 195828, 212147, 244785, 326380, 424294, 489570, 636441, 848588, 979140, 1060735, 1272882, 2121470, 2545764, 3182205, 4242940, 6364410, 12728820]

約数ペア:

[(1, 12728820), (2, 6364410), (3, 4242940), (4, 3182205), (5, 2545764), (6, 2121470), (10, 1272882), (12, 1060735), (13, 979140), (15, 848588), (20, 636441), (26, 489570), (30, 424294), (39, 326380), (52, 244785), (60, 212147), (65, 195828), (78, 163190), (130, 97914), (156, 81595), (195, 65276), (260, 48957), (390, 32638), (780, 16319)]