20757550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:154

約数の個数: 72

約数和(自身を含む): 43934688

約数和(自身を除く): 23177138

約数列:

[1, 2, 5, 10, 11, 22, 25, 47, 50, 55, 73, 94, 110, 121, 146, 235, 242, 275, 365, 470, 517, 550, 605, 730, 803, 1034, 1175, 1210, 1606, 1825, 2350, 2585, 3025, 3431, 3650, 4015, 5170, 5687, 6050, 6862, 8030, 8833, 11374, 12925, 17155, 17666, 20075, 25850, 28435, 34310, 37741, 40150, 44165, 56870, 75482, 85775, 88330, 142175, 171550, 188705, 220825, 284350, 377410, 415151, 441650, 830302, 943525, 1887050, 2075755, 4151510, 10378775, 20757550]

約数ペア:

[(1, 20757550), (2, 10378775), (5, 4151510), (10, 2075755), (11, 1887050), (22, 943525), (25, 830302), (47, 441650), (50, 415151), (55, 377410), (73, 284350), (94, 220825), (110, 188705), (121, 171550), (146, 142175), (235, 88330), (242, 85775), (275, 75482), (365, 56870), (470, 44165), (517, 40150), (550, 37741), (605, 34310), (730, 28435), (803, 25850), (1034, 20075), (1175, 17666), (1210, 17155), (1606, 12925), (1825, 11374), (2350, 8833), (2585, 8030), (3025, 6862), (3431, 6050), (3650, 5687), (4015, 5170)]