8990000

素因数分解:

$2^4\times 5^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:88

約数の個数: 100

約数和(自身を含む): 23242560

約数和(自身を除く): 14252560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 31, 40, 50, 58, 62, 80, 100, 116, 124, 125, 145, 155, 200, 232, 248, 250, 290, 310, 400, 464, 496, 500, 580, 620, 625, 725, 775, 899, 1000, 1160, 1240, 1250, 1450, 1550, 1798, 2000, 2320, 2480, 2500, 2900, 3100, 3596, 3625, 3875, 4495, 5000, 5800, 6200, 7192, 7250, 7750, 8990, 10000, 11600, 12400, 14384, 14500, 15500, 17980, 18125, 19375, 22475, 29000, 31000, 35960, 36250, 38750, 44950, 58000, 62000, 71920, 72500, 77500, 89900, 112375, 145000, 155000, 179800, 224750, 290000, 310000, 359600, 449500, 561875, 899000, 1123750, 1798000, 2247500, 4495000, 8990000]

約数ペア:

[(1, 8990000), (2, 4495000), (4, 2247500), (5, 1798000), (8, 1123750), (10, 899000), (16, 561875), (20, 449500), (25, 359600), (29, 310000), (31, 290000), (40, 224750), (50, 179800), (58, 155000), (62, 145000), (80, 112375), (100, 89900), (116, 77500), (124, 72500), (125, 71920), (145, 62000), (155, 58000), (200, 44950), (232, 38750), (248, 36250), (250, 35960), (290, 31000), (310, 29000), (400, 22475), (464, 19375), (496, 18125), (500, 17980), (580, 15500), (620, 14500), (625, 14384), (725, 12400), (775, 11600), (899, 10000), (1000, 8990), (1160, 7750), (1240, 7250), (1250, 7192), (1450, 6200), (1550, 5800), (1798, 5000), (2000, 4495), (2320, 3875), (2480, 3625), (2500, 3596), (2900, 3100)]