21151504

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2557}}^1$

素因数の和:2623

約数の個数: 40

約数和(自身を含む): 45675648

約数和(自身を除く): 24524144

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2557, 4136, 5114, 8272, 10228, 20456, 28127, 40912, 56254, 112508, 120179, 225016, 240358, 450032, 480716, 961432, 1321969, 1922864, 2643938, 5287876, 10575752, 21151504]

約数ペア:

[(1, 21151504), (2, 10575752), (4, 5287876), (8, 2643938), (11, 1922864), (16, 1321969), (22, 961432), (44, 480716), (47, 450032), (88, 240358), (94, 225016), (176, 120179), (188, 112508), (376, 56254), (517, 40912), (752, 28127), (1034, 20456), (2068, 10228), (2557, 8272), (4136, 5114)]