21387108

素因数分解:

$2^2\times 3^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 51226560

約数和(自身を除く): 29839452

約数列:

[1, 2, 3, 4, 6, 12, 83, 109, 166, 197, 218, 249, 327, 332, 394, 436, 498, 591, 654, 788, 996, 1182, 1308, 2364, 9047, 16351, 18094, 21473, 27141, 32702, 36188, 42946, 49053, 54282, 64419, 65404, 85892, 98106, 108564, 128838, 196212, 257676, 1782259, 3564518, 5346777, 7129036, 10693554, 21387108]

約数ペア:

[(1, 21387108), (2, 10693554), (3, 7129036), (4, 5346777), (6, 3564518), (12, 1782259), (83, 257676), (109, 196212), (166, 128838), (197, 108564), (218, 98106), (249, 85892), (327, 65404), (332, 64419), (394, 54282), (436, 49053), (498, 42946), (591, 36188), (654, 32702), (788, 27141), (996, 21473), (1182, 18094), (1308, 16351), (2364, 9047)]