25231563

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 19247157

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 107, 133, 171, 197, 321, 399, 591, 749, 963, 1197, 1379, 1773, 2033, 2247, 3743, 4137, 6099, 6741, 11229, 12411, 14231, 18297, 21079, 26201, 33687, 42693, 63237, 78603, 128079, 147553, 189711, 235809, 400501, 442659, 1201503, 1327977, 2803507, 3604509, 8410521, 25231563]

約数ペア:

[(1, 25231563), (3, 8410521), (7, 3604509), (9, 2803507), (19, 1327977), (21, 1201503), (57, 442659), (63, 400501), (107, 235809), (133, 189711), (171, 147553), (197, 128079), (321, 78603), (399, 63237), (591, 42693), (749, 33687), (963, 26201), (1197, 21079), (1379, 18297), (1773, 14231), (2033, 12411), (2247, 11229), (3743, 6741), (4137, 6099)]