21784920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{479}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 65664000

約数和(自身を除く): 43879080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 379, 479, 758, 958, 1137, 1437, 1516, 1895, 1916, 2274, 2395, 2874, 3032, 3790, 3832, 4548, 4790, 5685, 5748, 7185, 7580, 9096, 9580, 11370, 11496, 14370, 15160, 19160, 22740, 28740, 45480, 57480, 181541, 363082, 544623, 726164, 907705, 1089246, 1452328, 1815410, 2178492, 2723115, 3630820, 4356984, 5446230, 7261640, 10892460, 21784920]

約数ペア:

[(1, 21784920), (2, 10892460), (3, 7261640), (4, 5446230), (5, 4356984), (6, 3630820), (8, 2723115), (10, 2178492), (12, 1815410), (15, 1452328), (20, 1089246), (24, 907705), (30, 726164), (40, 544623), (60, 363082), (120, 181541), (379, 57480), (479, 45480), (758, 28740), (958, 22740), (1137, 19160), (1437, 15160), (1516, 14370), (1895, 11496), (1916, 11370), (2274, 9580), (2395, 9096), (2874, 7580), (3032, 7185), (3790, 5748), (3832, 5685), (4548, 4790)]