21045480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2113}}^1$

素因数の和:2210

約数の個数: 64

約数和(自身を含む): 63927360

約数和(自身を除く): 42881880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 83, 120, 166, 249, 332, 415, 498, 664, 830, 996, 1245, 1660, 1992, 2113, 2490, 3320, 4226, 4980, 6339, 8452, 9960, 10565, 12678, 16904, 21130, 25356, 31695, 42260, 50712, 63390, 84520, 126780, 175379, 253560, 350758, 526137, 701516, 876895, 1052274, 1403032, 1753790, 2104548, 2630685, 3507580, 4209096, 5261370, 7015160, 10522740, 21045480]

約数ペア:

[(1, 21045480), (2, 10522740), (3, 7015160), (4, 5261370), (5, 4209096), (6, 3507580), (8, 2630685), (10, 2104548), (12, 1753790), (15, 1403032), (20, 1052274), (24, 876895), (30, 701516), (40, 526137), (60, 350758), (83, 253560), (120, 175379), (166, 126780), (249, 84520), (332, 63390), (415, 50712), (498, 42260), (664, 31695), (830, 25356), (996, 21130), (1245, 16904), (1660, 12678), (1992, 10565), (2113, 9960), (2490, 8452), (3320, 6339), (4226, 4980)]