21472760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 50738400

約数和(自身を除く): 29265640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 107, 116, 145, 173, 214, 232, 290, 346, 428, 535, 580, 692, 856, 865, 1070, 1160, 1384, 1730, 2140, 3103, 3460, 4280, 5017, 6206, 6920, 10034, 12412, 15515, 18511, 20068, 24824, 25085, 31030, 37022, 40136, 50170, 62060, 74044, 92555, 100340, 124120, 148088, 185110, 200680, 370220, 536819, 740440, 1073638, 2147276, 2684095, 4294552, 5368190, 10736380, 21472760]

約数ペア:

[(1, 21472760), (2, 10736380), (4, 5368190), (5, 4294552), (8, 2684095), (10, 2147276), (20, 1073638), (29, 740440), (40, 536819), (58, 370220), (107, 200680), (116, 185110), (145, 148088), (173, 124120), (214, 100340), (232, 92555), (290, 74044), (346, 62060), (428, 50170), (535, 40136), (580, 37022), (692, 31030), (856, 25085), (865, 24824), (1070, 20068), (1160, 18511), (1384, 15515), (1730, 12412), (2140, 10034), (3103, 6920), (3460, 6206), (4280, 5017)]