20950400

素因数分解:

$2^7\times 5^2\times {\mathrm{6547}}^1$

素因数の和:6571

約数の個数: 48

約数和(自身を含む): 51761940

約数和(自身を除く): 30811540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6547, 13094, 26188, 32735, 52376, 65470, 104752, 130940, 163675, 209504, 261880, 327350, 419008, 523760, 654700, 838016, 1047520, 1309400, 2095040, 2618800, 4190080, 5237600, 10475200, 20950400]

約数ペア:

[(1, 20950400), (2, 10475200), (4, 5237600), (5, 4190080), (8, 2618800), (10, 2095040), (16, 1309400), (20, 1047520), (25, 838016), (32, 654700), (40, 523760), (50, 419008), (64, 327350), (80, 261880), (100, 209504), (128, 163675), (160, 130940), (200, 104752), (320, 65470), (400, 52376), (640, 32735), (800, 26188), (1600, 13094), (3200, 6547)]