19970200

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3221}}^1$

素因数の和:3268

約数の個数: 48

約数和(自身を含む): 47943360

約数和(自身を除く): 27973160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3221, 6200, 6442, 12884, 16105, 25768, 32210, 64420, 80525, 99851, 128840, 161050, 199702, 322100, 399404, 499255, 644200, 798808, 998510, 1997020, 2496275, 3994040, 4992550, 9985100, 19970200]

約数ペア:

[(1, 19970200), (2, 9985100), (4, 4992550), (5, 3994040), (8, 2496275), (10, 1997020), (20, 998510), (25, 798808), (31, 644200), (40, 499255), (50, 399404), (62, 322100), (100, 199702), (124, 161050), (155, 128840), (200, 99851), (248, 80525), (310, 64420), (620, 32210), (775, 25768), (1240, 16105), (1550, 12884), (3100, 6442), (3221, 6200)]