20845550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 21901714

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 151, 251, 275, 302, 502, 550, 755, 1255, 1510, 1661, 2510, 2761, 3322, 3775, 5522, 6275, 7550, 8305, 12550, 13805, 16610, 27610, 37901, 41525, 69025, 75802, 83050, 138050, 189505, 379010, 416911, 833822, 947525, 1895050, 2084555, 4169110, 10422775, 20845550]

約数ペア:

[(1, 20845550), (2, 10422775), (5, 4169110), (10, 2084555), (11, 1895050), (22, 947525), (25, 833822), (50, 416911), (55, 379010), (110, 189505), (151, 138050), (251, 83050), (275, 75802), (302, 69025), (502, 41525), (550, 37901), (755, 27610), (1255, 16610), (1510, 13805), (1661, 12550), (2510, 8305), (2761, 7550), (3322, 6275), (3775, 5522)]