15721493780

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1223}}^1\times {\mathrm{1619}}^1$

素因数の和:3248

約数の個数: 48

約数和(自身を含む): 33145822080

約数和(自身を除く): 17424328300

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1223, 1588, 1619, 1985, 2446, 3238, 3970, 4892, 6115, 6476, 7940, 8095, 12230, 16190, 24460, 32380, 485531, 642743, 971062, 1285486, 1942124, 1980037, 2427655, 2570972, 3213715, 3960074, 4855310, 6427430, 7920148, 9710620, 9900185, 12854860, 19800370, 39600740, 786074689, 1572149378, 3144298756, 3930373445, 7860746890, 15721493780]

約数ペア:

[(1, 15721493780), (2, 7860746890), (4, 3930373445), (5, 3144298756), (10, 1572149378), (20, 786074689), (397, 39600740), (794, 19800370), (1223, 12854860), (1588, 9900185), (1619, 9710620), (1985, 7920148), (2446, 6427430), (3238, 4855310), (3970, 3960074), (4892, 3213715), (6115, 2570972), (6476, 2427655), (7940, 1980037), (8095, 1942124), (12230, 1285486), (16190, 971062), (24460, 642743), (32380, 485531)]