19999300

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4651}}^1$

素因数の和:4708

約数の個数: 36

約数和(自身を含む): 44417296

約数和(自身を除く): 24417996

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4651, 9302, 18604, 23255, 46510, 93020, 116275, 199993, 232550, 399986, 465100, 799972, 999965, 1999930, 3999860, 4999825, 9999650, 19999300]

約数ペア:

[(1, 19999300), (2, 9999650), (4, 4999825), (5, 3999860), (10, 1999930), (20, 999965), (25, 799972), (43, 465100), (50, 399986), (86, 232550), (100, 199993), (172, 116275), (215, 93020), (430, 46510), (860, 23255), (1075, 18604), (2150, 9302), (4300, 4651)]