21861440

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1289}}^1$

素因数の和:1359

約数の個数: 56

約数和(自身を含む): 53080920

約数和(自身を除く): 31219480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1289, 1696, 2120, 2578, 3392, 4240, 5156, 6445, 8480, 10312, 12890, 16960, 20624, 25780, 41248, 51560, 68317, 82496, 103120, 136634, 206240, 273268, 341585, 412480, 546536, 683170, 1093072, 1366340, 2186144, 2732680, 4372288, 5465360, 10930720, 21861440]

約数ペア:

[(1, 21861440), (2, 10930720), (4, 5465360), (5, 4372288), (8, 2732680), (10, 2186144), (16, 1366340), (20, 1093072), (32, 683170), (40, 546536), (53, 412480), (64, 341585), (80, 273268), (106, 206240), (160, 136634), (212, 103120), (265, 82496), (320, 68317), (424, 51560), (530, 41248), (848, 25780), (1060, 20624), (1289, 16960), (1696, 12890), (2120, 10312), (2578, 8480), (3392, 6445), (4240, 5156)]