31687964

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 71500800

約数和(自身を除く): 39812836

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 47, 77, 94, 121, 154, 188, 199, 242, 308, 329, 398, 484, 517, 658, 796, 847, 1034, 1316, 1393, 1694, 2068, 2189, 2786, 3388, 3619, 4378, 5572, 5687, 7238, 8756, 9353, 11374, 14476, 15323, 18706, 22748, 24079, 30646, 37412, 39809, 48158, 61292, 65471, 79618, 96316, 102883, 130942, 159236, 168553, 205766, 261884, 337106, 411532, 674212, 720181, 1131713, 1440362, 2263426, 2880724, 4526852, 7921991, 15843982, 31687964]

約数ペア:

[(1, 31687964), (2, 15843982), (4, 7921991), (7, 4526852), (11, 2880724), (14, 2263426), (22, 1440362), (28, 1131713), (44, 720181), (47, 674212), (77, 411532), (94, 337106), (121, 261884), (154, 205766), (188, 168553), (199, 159236), (242, 130942), (308, 102883), (329, 96316), (398, 79618), (484, 65471), (517, 61292), (658, 48158), (796, 39809), (847, 37412), (1034, 30646), (1316, 24079), (1393, 22748), (1694, 18706), (2068, 15323), (2189, 14476), (2786, 11374), (3388, 9353), (3619, 8756), (4378, 7238), (5572, 5687)]