21395200

素因数分解:

$2^8\times 5^2\times {\mathrm{3343}}^1$

素因数の和:3369

約数の個数: 54

約数和(自身を含む): 52972304

約数和(自身を除く): 31577104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3343, 6400, 6686, 13372, 16715, 26744, 33430, 53488, 66860, 83575, 106976, 133720, 167150, 213952, 267440, 334300, 427904, 534880, 668600, 855808, 1069760, 1337200, 2139520, 2674400, 4279040, 5348800, 10697600, 21395200]

約数ペア:

[(1, 21395200), (2, 10697600), (4, 5348800), (5, 4279040), (8, 2674400), (10, 2139520), (16, 1337200), (20, 1069760), (25, 855808), (32, 668600), (40, 534880), (50, 427904), (64, 334300), (80, 267440), (100, 213952), (128, 167150), (160, 133720), (200, 106976), (256, 83575), (320, 66860), (400, 53488), (640, 33430), (800, 26744), (1280, 16715), (1600, 13372), (3200, 6686), (3343, 6400)]