21299800

素因数分解:

$2^3\times 5^2\times {\mathrm{281}}^1\times {\mathrm{379}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 49829400

約数和(自身を除く): 28529600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 281, 379, 562, 758, 1124, 1405, 1516, 1895, 2248, 2810, 3032, 3790, 5620, 7025, 7580, 9475, 11240, 14050, 15160, 18950, 28100, 37900, 56200, 75800, 106499, 212998, 425996, 532495, 851992, 1064990, 2129980, 2662475, 4259960, 5324950, 10649900, 21299800]

約数ペア:

[(1, 21299800), (2, 10649900), (4, 5324950), (5, 4259960), (8, 2662475), (10, 2129980), (20, 1064990), (25, 851992), (40, 532495), (50, 425996), (100, 212998), (200, 106499), (281, 75800), (379, 56200), (562, 37900), (758, 28100), (1124, 18950), (1405, 15160), (1516, 14050), (1895, 11240), (2248, 9475), (2810, 7580), (3032, 7025), (3790, 5620)]