390897925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{947}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 564249600

約数和(自身を除く): 173351675

約数列:

[1, 5, 11, 19, 25, 55, 79, 95, 209, 275, 395, 475, 869, 947, 1045, 1501, 1975, 4345, 4735, 5225, 7505, 10417, 16511, 17993, 21725, 23675, 37525, 52085, 74813, 82555, 89965, 197923, 260425, 374065, 412775, 449825, 822943, 989615, 1421447, 1870325, 4114715, 4948075, 7107235, 15635917, 20573575, 35536175, 78179585, 390897925]

約数ペア:

[(1, 390897925), (5, 78179585), (11, 35536175), (19, 20573575), (25, 15635917), (55, 7107235), (79, 4948075), (95, 4114715), (209, 1870325), (275, 1421447), (395, 989615), (475, 822943), (869, 449825), (947, 412775), (1045, 374065), (1501, 260425), (1975, 197923), (4345, 89965), (4735, 82555), (5225, 74813), (7505, 52085), (10417, 37525), (16511, 23675), (17993, 21725)]