20472738

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:359

約数の個数: 64

約数和(自身を含む): 48771072

約数和(自身を除く): 28298334

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 107, 143, 214, 223, 286, 321, 429, 446, 642, 669, 858, 1177, 1338, 1391, 2354, 2453, 2782, 2899, 3531, 4173, 4906, 5798, 7062, 7359, 8346, 8697, 14718, 15301, 17394, 23861, 30602, 31889, 45903, 47722, 63778, 71583, 91806, 95667, 143166, 191334, 262471, 310193, 524942, 620386, 787413, 930579, 1574826, 1861158, 3412123, 6824246, 10236369, 20472738]

約数ペア:

[(1, 20472738), (2, 10236369), (3, 6824246), (6, 3412123), (11, 1861158), (13, 1574826), (22, 930579), (26, 787413), (33, 620386), (39, 524942), (66, 310193), (78, 262471), (107, 191334), (143, 143166), (214, 95667), (223, 91806), (286, 71583), (321, 63778), (429, 47722), (446, 45903), (642, 31889), (669, 30602), (858, 23861), (1177, 17394), (1338, 15301), (1391, 14718), (2354, 8697), (2453, 8346), (2782, 7359), (2899, 7062), (3531, 5798), (4173, 4906)]