209929060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15643}}^1$

素因数の和:15724

約数の個数: 48

約数和(自身を含む): 488843712

約数和(自身を除く): 278914652

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 15643, 31286, 62572, 78215, 156430, 172073, 312860, 344146, 688292, 860365, 954223, 1720730, 1908446, 3441460, 3816892, 4771115, 9542230, 10496453, 19084460, 20992906, 41985812, 52482265, 104964530, 209929060]

約数ペア:

[(1, 209929060), (2, 104964530), (4, 52482265), (5, 41985812), (10, 20992906), (11, 19084460), (20, 10496453), (22, 9542230), (44, 4771115), (55, 3816892), (61, 3441460), (110, 1908446), (122, 1720730), (220, 954223), (244, 860365), (305, 688292), (610, 344146), (671, 312860), (1220, 172073), (1342, 156430), (2684, 78215), (3355, 62572), (6710, 31286), (13420, 15643)]