206815725

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 386880000

約数和(自身を除く): 180064275

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 149, 155, 199, 225, 279, 447, 465, 597, 745, 775, 995, 1341, 1395, 1791, 2235, 2325, 2985, 3725, 4619, 4975, 6169, 6705, 6975, 8955, 11175, 13857, 14925, 18507, 23095, 29651, 30845, 33525, 41571, 44775, 55521, 69285, 88953, 92535, 115475, 148255, 154225, 207855, 266859, 277605, 346425, 444765, 462675, 741275, 919181, 1039275, 1334295, 1388025, 2223825, 2757543, 4595905, 6671475, 8272629, 13787715, 22979525, 41363145, 68938575, 206815725]

約数ペア:

[(1, 206815725), (3, 68938575), (5, 41363145), (9, 22979525), (15, 13787715), (25, 8272629), (31, 6671475), (45, 4595905), (75, 2757543), (93, 2223825), (149, 1388025), (155, 1334295), (199, 1039275), (225, 919181), (279, 741275), (447, 462675), (465, 444765), (597, 346425), (745, 277605), (775, 266859), (995, 207855), (1341, 154225), (1395, 148255), (1791, 115475), (2235, 92535), (2325, 88953), (2985, 69285), (3725, 55521), (4619, 44775), (4975, 41571), (6169, 33525), (6705, 30845), (6975, 29651), (8955, 23095), (11175, 18507), (13857, 14925)]