20445975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{751}}^1$

素因数の和:789

約数の個数: 54

約数和(自身を含む): 40306448

約数和(自身を除く): 19860473

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 121, 165, 225, 275, 363, 495, 605, 751, 825, 1089, 1815, 2253, 2475, 3025, 3755, 5445, 6759, 8261, 9075, 11265, 18775, 24783, 27225, 33795, 41305, 56325, 74349, 90871, 123915, 168975, 206525, 272613, 371745, 454355, 619575, 817839, 1363065, 1858725, 2271775, 4089195, 6815325, 20445975]

約数ペア:

[(1, 20445975), (3, 6815325), (5, 4089195), (9, 2271775), (11, 1858725), (15, 1363065), (25, 817839), (33, 619575), (45, 454355), (55, 371745), (75, 272613), (99, 206525), (121, 168975), (165, 123915), (225, 90871), (275, 74349), (363, 56325), (495, 41305), (605, 33795), (751, 27225), (825, 24783), (1089, 18775), (1815, 11265), (2253, 9075), (2475, 8261), (3025, 6759), (3755, 5445)]