198400

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^1$

素因数の和:57

約数の個数: 54

約数和(自身を含む): 506912

約数和(自身を除く): 308512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 496, 620, 640, 775, 800, 992, 1240, 1280, 1550, 1600, 1984, 2480, 3100, 3200, 3968, 4960, 6200, 6400, 7936, 9920, 12400, 19840, 24800, 39680, 49600, 99200, 198400]

約数ペア:

[(1, 198400), (2, 99200), (4, 49600), (5, 39680), (8, 24800), (10, 19840), (16, 12400), (20, 9920), (25, 7936), (31, 6400), (32, 6200), (40, 4960), (50, 3968), (62, 3200), (64, 3100), (80, 2480), (100, 1984), (124, 1600), (128, 1550), (155, 1280), (160, 1240), (200, 992), (248, 800), (256, 775), (310, 640), (320, 620), (400, 496)]