12815180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{383}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 30965760

約数和(自身を除く): 18150580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 383, 478, 766, 956, 1195, 1532, 1673, 1915, 2390, 2681, 3346, 3830, 4780, 5362, 6692, 7660, 8365, 10724, 13405, 16730, 26810, 33460, 53620, 91537, 183074, 366148, 457685, 640759, 915370, 1281518, 1830740, 2563036, 3203795, 6407590, 12815180]

約数ペア:

[(1, 12815180), (2, 6407590), (4, 3203795), (5, 2563036), (7, 1830740), (10, 1281518), (14, 915370), (20, 640759), (28, 457685), (35, 366148), (70, 183074), (140, 91537), (239, 53620), (383, 33460), (478, 26810), (766, 16730), (956, 13405), (1195, 10724), (1532, 8365), (1673, 7660), (1915, 6692), (2390, 5362), (2681, 4780), (3346, 3830)]