90400000

素因数分解:

$2^8\times 5^5\times {\mathrm{113}}^1$

素因数の和:154

約数の個数: 108

約数和(自身を含む): 227540124

約数和(自身を除く): 137140124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 113, 125, 128, 160, 200, 226, 250, 256, 320, 400, 452, 500, 565, 625, 640, 800, 904, 1000, 1130, 1250, 1280, 1600, 1808, 2000, 2260, 2500, 2825, 3125, 3200, 3616, 4000, 4520, 5000, 5650, 6250, 6400, 7232, 8000, 9040, 10000, 11300, 12500, 14125, 14464, 16000, 18080, 20000, 22600, 25000, 28250, 28928, 32000, 36160, 40000, 45200, 50000, 56500, 70625, 72320, 80000, 90400, 100000, 113000, 141250, 144640, 160000, 180800, 200000, 226000, 282500, 353125, 361600, 400000, 452000, 565000, 706250, 723200, 800000, 904000, 1130000, 1412500, 1808000, 2260000, 2825000, 3616000, 4520000, 5650000, 9040000, 11300000, 18080000, 22600000, 45200000, 90400000]

約数ペア:

[(1, 90400000), (2, 45200000), (4, 22600000), (5, 18080000), (8, 11300000), (10, 9040000), (16, 5650000), (20, 4520000), (25, 3616000), (32, 2825000), (40, 2260000), (50, 1808000), (64, 1412500), (80, 1130000), (100, 904000), (113, 800000), (125, 723200), (128, 706250), (160, 565000), (200, 452000), (226, 400000), (250, 361600), (256, 353125), (320, 282500), (400, 226000), (452, 200000), (500, 180800), (565, 160000), (625, 144640), (640, 141250), (800, 113000), (904, 100000), (1000, 90400), (1130, 80000), (1250, 72320), (1280, 70625), (1600, 56500), (1808, 50000), (2000, 45200), (2260, 40000), (2500, 36160), (2825, 32000), (3125, 28928), (3200, 28250), (3616, 25000), (4000, 22600), (4520, 20000), (5000, 18080), (5650, 16000), (6250, 14464), (6400, 14125), (7232, 12500), (8000, 11300), (9040, 10000)]