25334740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 55218240

約数和(自身を除く): 29883500

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 331, 356, 430, 445, 662, 860, 890, 1324, 1655, 1780, 3310, 3827, 6620, 7654, 14233, 15308, 19135, 28466, 29459, 38270, 56932, 58918, 71165, 76540, 117836, 142330, 147295, 284660, 294590, 589180, 1266737, 2533474, 5066948, 6333685, 12667370, 25334740]

約数ペア:

[(1, 25334740), (2, 12667370), (4, 6333685), (5, 5066948), (10, 2533474), (20, 1266737), (43, 589180), (86, 294590), (89, 284660), (172, 147295), (178, 142330), (215, 117836), (331, 76540), (356, 71165), (430, 58918), (445, 56932), (662, 38270), (860, 29459), (890, 28466), (1324, 19135), (1655, 15308), (1780, 14233), (3310, 7654), (3827, 6620)]