12400000

素因数分解:

$2^7\times 5^5\times {\mathrm{31}}^1$

素因数の和:70

約数の個数: 96

約数和(自身を含む): 31872960

約数和(自身を除く): 19472960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 248, 250, 310, 320, 400, 496, 500, 620, 625, 640, 775, 800, 992, 1000, 1240, 1250, 1550, 1600, 1984, 2000, 2480, 2500, 3100, 3125, 3200, 3875, 3968, 4000, 4960, 5000, 6200, 6250, 7750, 8000, 9920, 10000, 12400, 12500, 15500, 16000, 19375, 19840, 20000, 24800, 25000, 31000, 38750, 40000, 49600, 50000, 62000, 77500, 80000, 96875, 99200, 100000, 124000, 155000, 193750, 200000, 248000, 310000, 387500, 400000, 496000, 620000, 775000, 1240000, 1550000, 2480000, 3100000, 6200000, 12400000]

約数ペア:

[(1, 12400000), (2, 6200000), (4, 3100000), (5, 2480000), (8, 1550000), (10, 1240000), (16, 775000), (20, 620000), (25, 496000), (31, 400000), (32, 387500), (40, 310000), (50, 248000), (62, 200000), (64, 193750), (80, 155000), (100, 124000), (124, 100000), (125, 99200), (128, 96875), (155, 80000), (160, 77500), (200, 62000), (248, 50000), (250, 49600), (310, 40000), (320, 38750), (400, 31000), (496, 25000), (500, 24800), (620, 20000), (625, 19840), (640, 19375), (775, 16000), (800, 15500), (992, 12500), (1000, 12400), (1240, 10000), (1250, 9920), (1550, 8000), (1600, 7750), (1984, 6250), (2000, 6200), (2480, 5000), (2500, 4960), (3100, 4000), (3125, 3968), (3200, 3875)]