28649988

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:341

約数の個数: 72

約数和(自身を含む): 75398232

約数和(自身を除く): 46748244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 137, 148, 157, 222, 274, 314, 333, 411, 444, 471, 548, 628, 666, 822, 942, 1233, 1332, 1413, 1644, 1884, 2466, 2826, 4932, 5069, 5652, 5809, 10138, 11618, 15207, 17427, 20276, 21509, 23236, 30414, 34854, 43018, 45621, 52281, 60828, 64527, 69708, 86036, 91242, 104562, 129054, 182484, 193581, 209124, 258108, 387162, 774324, 795833, 1591666, 2387499, 3183332, 4774998, 7162497, 9549996, 14324994, 28649988]

約数ペア:

[(1, 28649988), (2, 14324994), (3, 9549996), (4, 7162497), (6, 4774998), (9, 3183332), (12, 2387499), (18, 1591666), (36, 795833), (37, 774324), (74, 387162), (111, 258108), (137, 209124), (148, 193581), (157, 182484), (222, 129054), (274, 104562), (314, 91242), (333, 86036), (411, 69708), (444, 64527), (471, 60828), (548, 52281), (628, 45621), (666, 43018), (822, 34854), (942, 30414), (1233, 23236), (1332, 21509), (1413, 20276), (1644, 17427), (1884, 15207), (2466, 11618), (2826, 10138), (4932, 5809), (5069, 5652)]