20962156

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 19752980

約数列:

[1, 2, 4, 17, 34, 43, 67, 68, 86, 107, 134, 172, 214, 268, 428, 731, 1139, 1462, 1819, 2278, 2881, 2924, 3638, 4556, 4601, 5762, 7169, 7276, 9202, 11524, 14338, 18404, 28676, 48977, 78217, 97954, 121873, 156434, 195908, 243746, 308267, 312868, 487492, 616534, 1233068, 5240539, 10481078, 20962156]

約数ペア:

[(1, 20962156), (2, 10481078), (4, 5240539), (17, 1233068), (34, 616534), (43, 487492), (67, 312868), (68, 308267), (86, 243746), (107, 195908), (134, 156434), (172, 121873), (214, 97954), (268, 78217), (428, 48977), (731, 28676), (1139, 18404), (1462, 14338), (1819, 11524), (2278, 9202), (2881, 7276), (2924, 7169), (3638, 5762), (4556, 4601)]