81378927

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 138378240

約数和(自身を除く): 56999313

約数列:

[1, 3, 7, 9, 21, 63, 79, 83, 197, 237, 249, 553, 581, 591, 711, 747, 1379, 1659, 1743, 1773, 4137, 4977, 5229, 6557, 12411, 15563, 16351, 19671, 45899, 46689, 49053, 59013, 108941, 114457, 137697, 140067, 147159, 326823, 343371, 413091, 980469, 1030113, 1291729, 3875187, 9042103, 11625561, 27126309, 81378927]

約数ペア:

[(1, 81378927), (3, 27126309), (7, 11625561), (9, 9042103), (21, 3875187), (63, 1291729), (79, 1030113), (83, 980469), (197, 413091), (237, 343371), (249, 326823), (553, 147159), (581, 140067), (591, 137697), (711, 114457), (747, 108941), (1379, 59013), (1659, 49053), (1743, 46689), (1773, 45899), (4137, 19671), (4977, 16351), (5229, 15563), (6557, 12411)]