20287725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{619}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 36902400

約数和(自身を除く): 16614675

約数列:

[1, 3, 5, 15, 19, 23, 25, 57, 69, 75, 95, 115, 285, 345, 437, 475, 575, 619, 1311, 1425, 1725, 1857, 2185, 3095, 6555, 9285, 10925, 11761, 14237, 15475, 32775, 35283, 42711, 46425, 58805, 71185, 176415, 213555, 270503, 294025, 355925, 811509, 882075, 1067775, 1352515, 4057545, 6762575, 20287725]

約数ペア:

[(1, 20287725), (3, 6762575), (5, 4057545), (15, 1352515), (19, 1067775), (23, 882075), (25, 811509), (57, 355925), (69, 294025), (75, 270503), (95, 213555), (115, 176415), (285, 71185), (345, 58805), (437, 46425), (475, 42711), (575, 35283), (619, 32775), (1311, 15475), (1425, 14237), (1725, 11761), (1857, 10925), (2185, 9285), (3095, 6555)]