620000

素因数分解:

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

素因数の和:61

約数の個数: 60

約数和(自身を含む): 1574496

約数和(自身を除く): 954496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 125, 155, 160, 200, 248, 250, 310, 400, 496, 500, 620, 625, 775, 800, 992, 1000, 1240, 1250, 1550, 2000, 2480, 2500, 3100, 3875, 4000, 4960, 5000, 6200, 7750, 10000, 12400, 15500, 19375, 20000, 24800, 31000, 38750, 62000, 77500, 124000, 155000, 310000, 620000]

約数ペア:

[(1, 620000), (2, 310000), (4, 155000), (5, 124000), (8, 77500), (10, 62000), (16, 38750), (20, 31000), (25, 24800), (31, 20000), (32, 19375), (40, 15500), (50, 12400), (62, 10000), (80, 7750), (100, 6200), (124, 5000), (125, 4960), (155, 4000), (160, 3875), (200, 3100), (248, 2500), (250, 2480), (310, 2000), (400, 1550), (496, 1250), (500, 1240), (620, 1000), (625, 992), (775, 800)]