20863558

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13696442

約数列:

[1, 2, 19, 31, 38, 62, 89, 178, 199, 398, 589, 1178, 1691, 2759, 3382, 3781, 5518, 6169, 7562, 12338, 17711, 35422, 52421, 104842, 117211, 234422, 336509, 549041, 673018, 1098082, 10431779, 20863558]

約数ペア:

[(1, 20863558), (2, 10431779), (19, 1098082), (31, 673018), (38, 549041), (62, 336509), (89, 234422), (178, 117211), (199, 104842), (398, 52421), (589, 35422), (1178, 17711), (1691, 12338), (2759, 7562), (3382, 6169), (3781, 5518)]