20476725

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 35735808

約数和(自身を除く): 15259083

約数列:

[1, 3, 5, 15, 25, 37, 47, 75, 111, 141, 157, 185, 235, 471, 555, 705, 785, 925, 1175, 1739, 2355, 2775, 3525, 3925, 5217, 5809, 7379, 8695, 11775, 17427, 22137, 26085, 29045, 36895, 43475, 87135, 110685, 130425, 145225, 184475, 273023, 435675, 553425, 819069, 1365115, 4095345, 6825575, 20476725]

約数ペア:

[(1, 20476725), (3, 6825575), (5, 4095345), (15, 1365115), (25, 819069), (37, 553425), (47, 435675), (75, 273023), (111, 184475), (141, 145225), (157, 130425), (185, 110685), (235, 87135), (471, 43475), (555, 36895), (705, 29045), (785, 26085), (925, 22137), (1175, 17427), (1739, 11775), (2355, 8695), (2775, 7379), (3525, 5809), (3925, 5217)]