15881620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 34816320

約数和(自身を除く): 18934700

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 313, 430, 590, 626, 860, 1180, 1252, 1565, 2537, 3130, 5074, 6260, 10148, 12685, 13459, 18467, 25370, 26918, 36934, 50740, 53836, 67295, 73868, 92335, 134590, 184670, 269180, 369340, 794081, 1588162, 3176324, 3970405, 7940810, 15881620]

約数ペア:

[(1, 15881620), (2, 7940810), (4, 3970405), (5, 3176324), (10, 1588162), (20, 794081), (43, 369340), (59, 269180), (86, 184670), (118, 134590), (172, 92335), (215, 73868), (236, 67295), (295, 53836), (313, 50740), (430, 36934), (590, 26918), (626, 25370), (860, 18467), (1180, 13459), (1252, 12685), (1565, 10148), (2537, 6260), (3130, 5074)]