399900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:91

約数の個数: 72

約数和(自身を含む): 1222144

約数和(自身を除く): 822244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 31, 43, 50, 60, 62, 75, 86, 93, 100, 124, 129, 150, 155, 172, 186, 215, 258, 300, 310, 372, 430, 465, 516, 620, 645, 775, 860, 930, 1075, 1290, 1333, 1550, 1860, 2150, 2325, 2580, 2666, 3100, 3225, 3999, 4300, 4650, 5332, 6450, 6665, 7998, 9300, 12900, 13330, 15996, 19995, 26660, 33325, 39990, 66650, 79980, 99975, 133300, 199950, 399900]

約数ペア:

[(1, 399900), (2, 199950), (3, 133300), (4, 99975), (5, 79980), (6, 66650), (10, 39990), (12, 33325), (15, 26660), (20, 19995), (25, 15996), (30, 13330), (31, 12900), (43, 9300), (50, 7998), (60, 6665), (62, 6450), (75, 5332), (86, 4650), (93, 4300), (100, 3999), (124, 3225), (129, 3100), (150, 2666), (155, 2580), (172, 2325), (186, 2150), (215, 1860), (258, 1550), (300, 1333), (310, 1290), (372, 1075), (430, 930), (465, 860), (516, 775), (620, 645)]