21209188

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5297}}^1$

素因数の和:5332

約数の個数: 48

約数和(自身を含む): 49843584

約数和(自身を除く): 28634396

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5297, 10594, 21188, 37079, 58267, 68861, 74158, 116534, 137722, 148316, 233068, 275444, 407869, 482027, 757471, 815738, 964054, 1514942, 1631476, 1928108, 3029884, 5302297, 10604594, 21209188]

約数ペア:

[(1, 21209188), (2, 10604594), (4, 5302297), (7, 3029884), (11, 1928108), (13, 1631476), (14, 1514942), (22, 964054), (26, 815738), (28, 757471), (44, 482027), (52, 407869), (77, 275444), (91, 233068), (143, 148316), (154, 137722), (182, 116534), (286, 74158), (308, 68861), (364, 58267), (572, 37079), (1001, 21188), (2002, 10594), (4004, 5297)]