2666000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:97

約数の個数: 80

約数和(自身を含む): 6809088

約数和(自身を除く): 4143088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 43, 50, 62, 80, 86, 100, 124, 125, 155, 172, 200, 215, 248, 250, 310, 344, 400, 430, 496, 500, 620, 688, 775, 860, 1000, 1075, 1240, 1333, 1550, 1720, 2000, 2150, 2480, 2666, 3100, 3440, 3875, 4300, 5332, 5375, 6200, 6665, 7750, 8600, 10664, 10750, 12400, 13330, 15500, 17200, 21328, 21500, 26660, 31000, 33325, 43000, 53320, 62000, 66650, 86000, 106640, 133300, 166625, 266600, 333250, 533200, 666500, 1333000, 2666000]

約数ペア:

[(1, 2666000), (2, 1333000), (4, 666500), (5, 533200), (8, 333250), (10, 266600), (16, 166625), (20, 133300), (25, 106640), (31, 86000), (40, 66650), (43, 62000), (50, 53320), (62, 43000), (80, 33325), (86, 31000), (100, 26660), (124, 21500), (125, 21328), (155, 17200), (172, 15500), (200, 13330), (215, 12400), (248, 10750), (250, 10664), (310, 8600), (344, 7750), (400, 6665), (430, 6200), (496, 5375), (500, 5332), (620, 4300), (688, 3875), (775, 3440), (860, 3100), (1000, 2666), (1075, 2480), (1240, 2150), (1333, 2000), (1550, 1720)]