21256312

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{3137}}^1$

素因数の和:3172

約数の個数: 48

約数和(自身を含む): 50082480

約数和(自身を除く): 28826168

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 242, 308, 484, 616, 847, 968, 1694, 3137, 3388, 6274, 6776, 12548, 21959, 25096, 34507, 43918, 69014, 87836, 138028, 175672, 241549, 276056, 379577, 483098, 759154, 966196, 1518308, 1932392, 2657039, 3036616, 5314078, 10628156, 21256312]

約数ペア:

[(1, 21256312), (2, 10628156), (4, 5314078), (7, 3036616), (8, 2657039), (11, 1932392), (14, 1518308), (22, 966196), (28, 759154), (44, 483098), (56, 379577), (77, 276056), (88, 241549), (121, 175672), (154, 138028), (242, 87836), (308, 69014), (484, 43918), (616, 34507), (847, 25096), (968, 21959), (1694, 12548), (3137, 6776), (3388, 6274)]