21205590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{419}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 58544640

約数和(自身を除く): 37339050

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 241, 419, 482, 723, 838, 1205, 1257, 1446, 1687, 2095, 2410, 2514, 2933, 3374, 3615, 4190, 5061, 5866, 6285, 7230, 8435, 8799, 10122, 12570, 14665, 16870, 17598, 25305, 29330, 43995, 50610, 87990, 100979, 201958, 302937, 504895, 605874, 706853, 1009790, 1413706, 1514685, 2120559, 3029370, 3534265, 4241118, 7068530, 10602795, 21205590]

約数ペア:

[(1, 21205590), (2, 10602795), (3, 7068530), (5, 4241118), (6, 3534265), (7, 3029370), (10, 2120559), (14, 1514685), (15, 1413706), (21, 1009790), (30, 706853), (35, 605874), (42, 504895), (70, 302937), (105, 201958), (210, 100979), (241, 87990), (419, 50610), (482, 43995), (723, 29330), (838, 25305), (1205, 17598), (1257, 16870), (1446, 14665), (1687, 12570), (2095, 10122), (2410, 8799), (2514, 8435), (2933, 7230), (3374, 6285), (3615, 5866), (4190, 5061)]