20156800

素因数分解:

$2^7\times 5^2\times {\mathrm{6299}}^1$

素因数の和:6323

約数の個数: 48

約数和(自身を含む): 49801500

約数和(自身を除く): 29644700

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, 6299, 12598, 25196, 31495, 50392, 62990, 100784, 125980, 157475, 201568, 251960, 314950, 403136, 503920, 629900, 806272, 1007840, 1259800, 2015680, 2519600, 4031360, 5039200, 10078400, 20156800]

約数ペア:

[(1, 20156800), (2, 10078400), (4, 5039200), (5, 4031360), (8, 2519600), (10, 2015680), (16, 1259800), (20, 1007840), (25, 806272), (32, 629900), (40, 503920), (50, 403136), (64, 314950), (80, 251960), (100, 201568), (128, 157475), (160, 125980), (200, 100784), (320, 62990), (400, 50392), (640, 31495), (800, 25196), (1600, 12598), (3200, 6299)]