16401978

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 37752000

約数和(自身を除く): 21350022

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 199, 241, 342, 398, 482, 597, 723, 1194, 1446, 1791, 2169, 3582, 3781, 4338, 4579, 7562, 9158, 11343, 13737, 22686, 27474, 34029, 41211, 47959, 68058, 82422, 95918, 143877, 287754, 431631, 863262, 911221, 1822442, 2733663, 5467326, 8200989, 16401978]

約数ペア:

[(1, 16401978), (2, 8200989), (3, 5467326), (6, 2733663), (9, 1822442), (18, 911221), (19, 863262), (38, 431631), (57, 287754), (114, 143877), (171, 95918), (199, 82422), (241, 68058), (342, 47959), (398, 41211), (482, 34029), (597, 27474), (723, 22686), (1194, 13737), (1446, 11343), (1791, 9158), (2169, 7562), (3582, 4579), (3781, 4338)]