20325448

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 45460800

約数和(自身を除く): 25135352

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 109, 143, 163, 218, 286, 326, 436, 572, 652, 872, 1144, 1199, 1304, 1417, 1793, 2119, 2398, 2834, 3586, 4238, 4796, 5668, 7172, 8476, 9592, 11336, 14344, 15587, 16952, 17767, 23309, 31174, 35534, 46618, 62348, 71068, 93236, 124696, 142136, 186472, 195437, 230971, 390874, 461942, 781748, 923884, 1563496, 1847768, 2540681, 5081362, 10162724, 20325448]

約数ペア:

[(1, 20325448), (2, 10162724), (4, 5081362), (8, 2540681), (11, 1847768), (13, 1563496), (22, 923884), (26, 781748), (44, 461942), (52, 390874), (88, 230971), (104, 195437), (109, 186472), (143, 142136), (163, 124696), (218, 93236), (286, 71068), (326, 62348), (436, 46618), (572, 35534), (652, 31174), (872, 23309), (1144, 17767), (1199, 16952), (1304, 15587), (1417, 14344), (1793, 11336), (2119, 9592), (2398, 8476), (2834, 7172), (3586, 5668), (4238, 4796)]