168978820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1\times {\mathrm{563}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 364795200

約数和(自身を除く): 195816380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 349, 430, 563, 698, 860, 1126, 1396, 1745, 2252, 2815, 3490, 5630, 6980, 11260, 15007, 24209, 30014, 48418, 60028, 75035, 96836, 121045, 150070, 196487, 242090, 300140, 392974, 484180, 785948, 982435, 1964870, 3929740, 8448941, 16897882, 33795764, 42244705, 84489410, 168978820]

約数ペア:

[(1, 168978820), (2, 84489410), (4, 42244705), (5, 33795764), (10, 16897882), (20, 8448941), (43, 3929740), (86, 1964870), (172, 982435), (215, 785948), (349, 484180), (430, 392974), (563, 300140), (698, 242090), (860, 196487), (1126, 150070), (1396, 121045), (1745, 96836), (2252, 75035), (2815, 60028), (3490, 48418), (5630, 30014), (6980, 24209), (11260, 15007)]